Home / 18,687,661.80-28,031,492.70-5,912,082.60

Finding the Fourth Proportional to 18,687,661.80, 28,031,492.70 and 5,912,082.60

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Solution

The fourth proportional to 18,687,661.80, 28,031,492.70 and 5,912,082.60 is: 8,868,123.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,687,661.80 : 28,031,492.70 = 5,912,082.60 : x
  2. Step 2: Convert to fraction form
    18,687,661.80/28,031,492.70 = 5,912,082.60/x
  3. Step 3: Cross multiply
    18,687,661.80x = 28,031,492.70 × 5,912,082.60
  4. Step 4: Simplify right side
    18,687,661.80x = 165,724,500,243,697
  5. Step 5: Solve for x
    x = 165,724,500,243,697/18,687,661.80
  6. Step 6: Final answer
    x = 8,868,123.90

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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.