Home / 16,981.68-25,435.65-10,387.86

Finding the Fourth Proportional to 16,981.68, 25,435.65 and 10,387.86

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Solution

The fourth proportional to 16,981.68, 25,435.65 and 10,387.86 is: 15,559.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    16,981.68 : 25,435.65 = 10,387.86 : x
  2. Step 2: Convert to fraction form
    16,981.68/25,435.65 = 10,387.86/x
  3. Step 3: Cross multiply
    16,981.68x = 25,435.65 × 10,387.86
  4. Step 4: Simplify right side
    16,981.68x = 264,221,971.21
  5. Step 5: Solve for x
    x = 264,221,971.21/16,981.68
  6. Step 6: Final answer
    x = 15,559.24

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.