Home / 15,522.60-21,420.09-8,448.87

Finding the Fourth Proportional to 15,522.60, 21,420.09 and 8,448.87

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Solution

The fourth proportional to 15,522.60, 21,420.09 and 8,448.87 is: 11,658.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,522.60 : 21,420.09 = 8,448.87 : x
  2. Step 2: Convert to fraction form
    15,522.60/21,420.09 = 8,448.87/x
  3. Step 3: Cross multiply
    15,522.60x = 21,420.09 × 8,448.87
  4. Step 4: Simplify right side
    15,522.60x = 180,975,555.80
  5. Step 5: Solve for x
    x = 180,975,555.80/15,522.60
  6. Step 6: Final answer
    x = 11,658.84

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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.