Home / 15,124.30-20,872.11-8,410.71

Finding the Fourth Proportional to 15,124.30, 20,872.11 and 8,410.71

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Solution

The fourth proportional to 15,124.30, 20,872.11 and 8,410.71 is: 11,607.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,124.30 : 20,872.11 = 8,410.71 : x
  2. Step 2: Convert to fraction form
    15,124.30/20,872.11 = 8,410.71/x
  3. Step 3: Cross multiply
    15,124.30x = 20,872.11 × 8,410.71
  4. Step 4: Simplify right side
    15,124.30x = 175,549,264.30
  5. Step 5: Solve for x
    x = 175,549,264.30/15,124.30
  6. Step 6: Final answer
    x = 11,607.10

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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.