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Finding the Fourth Proportional to 17,485.60, 24,128.04 and 9,929.20

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Solution

The fourth proportional to 17,485.60, 24,128.04 and 9,929.20 is: 13,701.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    17,485.60 : 24,128.04 = 9,929.20 : x
  2. Step 2: Convert to fraction form
    17,485.60/24,128.04 = 9,929.20/x
  3. Step 3: Cross multiply
    17,485.60x = 24,128.04 × 9,929.20
  4. Step 4: Simplify right side
    17,485.60x = 239,572,134.77
  5. Step 5: Solve for x
    x = 239,572,134.77/17,485.60
  6. Step 6: Final answer
    x = 13,701.11

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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.