Home / 18,640,220.91-25,710,254.11-12,442,142.62

Finding the Fourth Proportional to 18,640,220.91, 25,710,254.11 and 12,442,142.62

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Solution

The fourth proportional to 18,640,220.91, 25,710,254.11 and 12,442,142.62 is: 17,161,312.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,640,220.91 : 25,710,254.11 = 12,442,142.62 : x
  2. Step 2: Convert to fraction form
    18,640,220.91/25,710,254.11 = 12,442,142.62/x
  3. Step 3: Cross multiply
    18,640,220.91x = 25,710,254.11 × 12,442,142.62
  4. Step 4: Simplify right side
    18,640,220.91x = 319,890,648,433,061.12
  5. Step 5: Solve for x
    x = 319,890,648,433,061.12/18,640,220.91
  6. Step 6: Final answer
    x = 17,161,312.09

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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.