Home / 18,687,640.80-28,031,461.20-5,912,061.60

Finding the Fourth Proportional to 18,687,640.80, 28,031,461.20 and 5,912,061.60

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Solution

The fourth proportional to 18,687,640.80, 28,031,461.20 and 5,912,061.60 is: 8,868,092.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,687,640.80 : 28,031,461.20 = 5,912,061.60 : x
  2. Step 2: Convert to fraction form
    18,687,640.80/28,031,461.20 = 5,912,061.60/x
  3. Step 3: Cross multiply
    18,687,640.80x = 28,031,461.20 × 5,912,061.60
  4. Step 4: Simplify right side
    18,687,640.80x = 165,723,725,352,409.91
  5. Step 5: Solve for x
    x = 165,723,725,352,409.91/18,687,640.80
  6. Step 6: Final answer
    x = 8,868,092.40

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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.