Home / 19,520.32-29,280.52-9,139.36

Finding the Fourth Proportional to 19,520.32, 29,280.52 and 9,139.36

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Solution

The fourth proportional to 19,520.32, 29,280.52 and 9,139.36 is: 13,709.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,520.32 : 29,280.52 = 9,139.36 : x
  2. Step 2: Convert to fraction form
    19,520.32/29,280.52 = 9,139.36/x
  3. Step 3: Cross multiply
    19,520.32x = 29,280.52 × 9,139.36
  4. Step 4: Simplify right side
    19,520.32x = 267,605,213.27
  5. Step 5: Solve for x
    x = 267,605,213.27/19,520.32
  6. Step 6: Final answer
    x = 13,709.06

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1.5x scale

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.