Home / 15,960.32-22,037.12-9,681.20

Finding the Fourth Proportional to 15,960.32, 22,037.12 and 9,681.20

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Solution

The fourth proportional to 15,960.32, 22,037.12 and 9,681.20 is: 13,367.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,960.32 : 22,037.12 = 9,681.20 : x
  2. Step 2: Convert to fraction form
    15,960.32/22,037.12 = 9,681.20/x
  3. Step 3: Cross multiply
    15,960.32x = 22,037.12 × 9,681.20
  4. Step 4: Simplify right side
    15,960.32x = 213,345,766.14
  5. Step 5: Solve for x
    x = 213,345,766.14/15,960.32
  6. Step 6: Final answer
    x = 13,367.26

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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.