Home / 13,565.04-20,331.36-7,713.60

Finding the Fourth Proportional to 13,565.04, 20,331.36 and 7,713.60

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Solution

The fourth proportional to 13,565.04, 20,331.36 and 7,713.60 is: 11,561.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,565.04 : 20,331.36 = 7,713.60 : x
  2. Step 2: Convert to fraction form
    13,565.04/20,331.36 = 7,713.60/x
  3. Step 3: Cross multiply
    13,565.04x = 20,331.36 × 7,713.60
  4. Step 4: Simplify right side
    13,565.04x = 156,827,978.50
  5. Step 5: Solve for x
    x = 156,827,978.50/13,565.04
  6. Step 6: Final answer
    x = 11,561.19

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.