Home / 18,721,638.70-28,082,458.05-15,698,329.90

Finding the Fourth Proportional to 18,721,638.70, 28,082,458.05 and 15,698,329.90

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Solution

The fourth proportional to 18,721,638.70, 28,082,458.05 and 15,698,329.90 is: 23,547,494.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,721,638.70 : 28,082,458.05 = 15,698,329.90 : x
  2. Step 2: Convert to fraction form
    18,721,638.70/28,082,458.05 = 15,698,329.90/x
  3. Step 3: Cross multiply
    18,721,638.70x = 28,082,458.05 × 15,698,329.90
  4. Step 4: Simplify right side
    18,721,638.70x = 440,847,690,871,810.69
  5. Step 5: Solve for x
    x = 440,847,690,871,810.69/18,721,638.70
  6. Step 6: Final answer
    x = 23,547,494.85

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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.