Home / 18,721,874.70-28,082,812.05-15,698,565.90

Finding the Fourth Proportional to 18,721,874.70, 28,082,812.05 and 15,698,565.90

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Solution

The fourth proportional to 18,721,874.70, 28,082,812.05 and 15,698,565.90 is: 23,547,848.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,721,874.70 : 28,082,812.05 = 15,698,565.90 : x
  2. Step 2: Convert to fraction form
    18,721,874.70/28,082,812.05 = 15,698,565.90/x
  3. Step 3: Cross multiply
    18,721,874.70x = 28,082,812.05 × 15,698,565.90
  4. Step 4: Simplify right side
    18,721,874.70x = 440,859,875,624,239.12
  5. Step 5: Solve for x
    x = 440,859,875,624,239.12/18,721,874.70
  6. Step 6: Final answer
    x = 23,547,848.85

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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.