Home / 15,155.64-20,845.38-12,164.92

Finding the Fourth Proportional to 15,155.64, 20,845.38 and 12,164.92

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Solution

The fourth proportional to 15,155.64, 20,845.38 and 12,164.92 is: 16,731.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,155.64 : 20,845.38 = 12,164.92 : x
  2. Step 2: Convert to fraction form
    15,155.64/20,845.38 = 12,164.92/x
  3. Step 3: Cross multiply
    15,155.64x = 20,845.38 × 12,164.92
  4. Step 4: Simplify right side
    15,155.64x = 253,582,373.57
  5. Step 5: Solve for x
    x = 253,582,373.57/15,155.64
  6. Step 6: Final answer
    x = 16,731.88

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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.