Home / 15,522.30-21,423.15-8,808.75

Finding the Fourth Proportional to 15,522.30, 21,423.15 and 8,808.75

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Solution

The fourth proportional to 15,522.30, 21,423.15 and 8,808.75 is: 12,157.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,522.30 : 21,423.15 = 8,808.75 : x
  2. Step 2: Convert to fraction form
    15,522.30/21,423.15 = 8,808.75/x
  3. Step 3: Cross multiply
    15,522.30x = 21,423.15 × 8,808.75
  4. Step 4: Simplify right side
    15,522.30x = 188,711,172.56
  5. Step 5: Solve for x
    x = 188,711,172.56/15,522.30
  6. Step 6: Final answer
    x = 12,157.42

Related Problems

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Half scale
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Double scale
Find fourth proportional to 15,523.30, 21,424.53 and 8,809.75
Similar ratio
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.