Home / 15,729.60-21,705.12-9,017.04

Finding the Fourth Proportional to 15,729.60, 21,705.12 and 9,017.04

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Solution

The fourth proportional to 15,729.60, 21,705.12 and 9,017.04 is: 12,442.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,729.60 : 21,705.12 = 9,017.04 : x
  2. Step 2: Convert to fraction form
    15,729.60/21,705.12 = 9,017.04/x
  3. Step 3: Cross multiply
    15,729.60x = 21,705.12 × 9,017.04
  4. Step 4: Simplify right side
    15,729.60x = 195,715,935.24
  5. Step 5: Solve for x
    x = 195,715,935.24/15,729.60
  6. Step 6: Final answer
    x = 12,442.52

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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.