Home / 18,387.55-25,379.35-10,434.56

Finding the Fourth Proportional to 18,387.55, 25,379.35 and 10,434.56

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Solution

The fourth proportional to 18,387.55, 25,379.35 and 10,434.56 is: 14,402.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,387.55 : 25,379.35 = 10,434.56 : x
  2. Step 2: Convert to fraction form
    18,387.55/25,379.35 = 10,434.56/x
  3. Step 3: Cross multiply
    18,387.55x = 25,379.35 × 10,434.56
  4. Step 4: Simplify right side
    18,387.55x = 264,822,387.70
  5. Step 5: Solve for x
    x = 264,822,387.70/18,387.55
  6. Step 6: Final answer
    x = 14,402.27

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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.