Home / 15,127.18-20,873.90-8,411.72

Finding the Fourth Proportional to 15,127.18, 20,873.90 and 8,411.72

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Solution

The fourth proportional to 15,127.18, 20,873.90 and 8,411.72 is: 11,607.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,127.18 : 20,873.90 = 8,411.72 : x
  2. Step 2: Convert to fraction form
    15,127.18/20,873.90 = 8,411.72/x
  3. Step 3: Cross multiply
    15,127.18x = 20,873.90 × 8,411.72
  4. Step 4: Simplify right side
    15,127.18x = 175,585,436.18
  5. Step 5: Solve for x
    x = 175,585,436.18/15,127.18
  6. Step 6: Final answer
    x = 11,607.28

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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.