Home / 15,629.28-21,564.72-11,430.24

Finding the Fourth Proportional to 15,629.28, 21,564.72 and 11,430.24

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Solution

The fourth proportional to 15,629.28, 21,564.72 and 11,430.24 is: 15,771.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,629.28 : 21,564.72 = 11,430.24 : x
  2. Step 2: Convert to fraction form
    15,629.28/21,564.72 = 11,430.24/x
  3. Step 3: Cross multiply
    15,629.28x = 21,564.72 × 11,430.24
  4. Step 4: Simplify right side
    15,629.28x = 246,489,925.13
  5. Step 5: Solve for x
    x = 246,489,925.13/15,629.28
  6. Step 6: Final answer
    x = 15,771.04

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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.