Home / 10,139.52-14,002.20-9,587.32

Finding the Fourth Proportional to 10,139.52, 14,002.20 and 9,587.32

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Solution

The fourth proportional to 10,139.52, 14,002.20 and 9,587.32 is: 13,239.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,139.52 : 14,002.20 = 9,587.32 : x
  2. Step 2: Convert to fraction form
    10,139.52/14,002.20 = 9,587.32/x
  3. Step 3: Cross multiply
    10,139.52x = 14,002.20 × 9,587.32
  4. Step 4: Simplify right side
    10,139.52x = 134,243,572.10
  5. Step 5: Solve for x
    x = 134,243,572.10/10,139.52
  6. Step 6: Final answer
    x = 13,239.64

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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.