Home / 31,809.18-47,737.46-12,126.18

Finding the Fourth Proportional to 31,809.18, 47,737.46 and 12,126.18

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Solution

The fourth proportional to 31,809.18, 47,737.46 and 12,126.18 is: 18,198.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,809.18 : 47,737.46 = 12,126.18 : x
  2. Step 2: Convert to fraction form
    31,809.18/47,737.46 = 12,126.18/x
  3. Step 3: Cross multiply
    31,809.18x = 47,737.46 × 12,126.18
  4. Step 4: Simplify right side
    31,809.18x = 578,873,032.70
  5. Step 5: Solve for x
    x = 578,873,032.70/31,809.18
  6. Step 6: Final answer
    x = 18,198.30

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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.