Home / 27,905.32-38,511.50-15,972.40

Finding the Fourth Proportional to 27,905.32, 38,511.50 and 15,972.40

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Solution

The fourth proportional to 27,905.32, 38,511.50 and 15,972.40 is: 22,043.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,905.32 : 38,511.50 = 15,972.40 : x
  2. Step 2: Convert to fraction form
    27,905.32/38,511.50 = 15,972.40/x
  3. Step 3: Cross multiply
    27,905.32x = 38,511.50 × 15,972.40
  4. Step 4: Simplify right side
    27,905.32x = 615,121,082.60
  5. Step 5: Solve for x
    x = 615,121,082.60/27,905.32
  6. Step 6: Final answer
    x = 22,043.15

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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.