Home / 15,423.30-21,284.10-8,349.68

Finding the Fourth Proportional to 15,423.30, 21,284.10 and 8,349.68

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Solution

The fourth proportional to 15,423.30, 21,284.10 and 8,349.68 is: 11,522.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,423.30 : 21,284.10 = 8,349.68 : x
  2. Step 2: Convert to fraction form
    15,423.30/21,284.10 = 8,349.68/x
  3. Step 3: Cross multiply
    15,423.30x = 21,284.10 × 8,349.68
  4. Step 4: Simplify right side
    15,423.30x = 177,715,424.09
  5. Step 5: Solve for x
    x = 177,715,424.09/15,423.30
  6. Step 6: Final answer
    x = 11,522.53

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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.