Home / 15,439.70-23,127.15-12,137.06

Finding the Fourth Proportional to 15,439.70, 23,127.15 and 12,137.06

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Solution

The fourth proportional to 15,439.70, 23,127.15 and 12,137.06 is: 18,180.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,439.70 : 23,127.15 = 12,137.06 : x
  2. Step 2: Convert to fraction form
    15,439.70/23,127.15 = 12,137.06/x
  3. Step 3: Cross multiply
    15,439.70x = 23,127.15 × 12,137.06
  4. Step 4: Simplify right side
    15,439.70x = 280,695,607.18
  5. Step 5: Solve for x
    x = 280,695,607.18/15,439.70
  6. Step 6: Final answer
    x = 18,180.12

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1.5x scale

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.