Home / 18,641.10-25,740.28-12,381.42

Finding the Fourth Proportional to 18,641.10, 25,740.28 and 12,381.42

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Solution

The fourth proportional to 18,641.10, 25,740.28 and 12,381.42 is: 17,096.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,641.10 : 25,740.28 = 12,381.42 : x
  2. Step 2: Convert to fraction form
    18,641.10/25,740.28 = 12,381.42/x
  3. Step 3: Cross multiply
    18,641.10x = 25,740.28 × 12,381.42
  4. Step 4: Simplify right side
    18,641.10x = 318,701,217.60
  5. Step 5: Solve for x
    x = 318,701,217.60/18,641.10
  6. Step 6: Final answer
    x = 17,096.70

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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.