Home / 18,387.29-25,359.72-12,013.40

Finding the Fourth Proportional to 18,387.29, 25,359.72 and 12,013.40

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Solution

The fourth proportional to 18,387.29, 25,359.72 and 12,013.40 is: 16,568.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,387.29 : 25,359.72 = 12,013.40 : x
  2. Step 2: Convert to fraction form
    18,387.29/25,359.72 = 12,013.40/x
  3. Step 3: Cross multiply
    18,387.29x = 25,359.72 × 12,013.40
  4. Step 4: Simplify right side
    18,387.29x = 304,656,333.45
  5. Step 5: Solve for x
    x = 304,656,333.45/18,387.29
  6. Step 6: Final answer
    x = 16,568.86

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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.