Home / 15,720.04-21,693.60-9,007.92

Finding the Fourth Proportional to 15,720.04, 21,693.60 and 9,007.92

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Solution

The fourth proportional to 15,720.04, 21,693.60 and 9,007.92 is: 12,430.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,720.04 : 21,693.60 = 9,007.92 : x
  2. Step 2: Convert to fraction form
    15,720.04/21,693.60 = 9,007.92/x
  3. Step 3: Cross multiply
    15,720.04x = 21,693.60 × 9,007.92
  4. Step 4: Simplify right side
    15,720.04x = 195,414,213.31
  5. Step 5: Solve for x
    x = 195,414,213.31/15,720.04
  6. Step 6: Final answer
    x = 12,430.90

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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.