Home / 15,932.32-21,985.92-9,217.60

Finding the Fourth Proportional to 15,932.32, 21,985.92 and 9,217.60

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Solution

The fourth proportional to 15,932.32, 21,985.92 and 9,217.60 is: 12,719.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,932.32 : 21,985.92 = 9,217.60 : x
  2. Step 2: Convert to fraction form
    15,932.32/21,985.92 = 9,217.60/x
  3. Step 3: Cross multiply
    15,932.32x = 21,985.92 × 9,217.60
  4. Step 4: Simplify right side
    15,932.32x = 202,657,416.19
  5. Step 5: Solve for x
    x = 202,657,416.19/15,932.32
  6. Step 6: Final answer
    x = 12,719.89

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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.