Home / 15,511,020.38-21,399,667.52-8,981,085.50

Finding the Fourth Proportional to 15,511,020.38, 21,399,667.52 and 8,981,085.50

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Solution

The fourth proportional to 15,511,020.38, 21,399,667.52 and 8,981,085.50 is: 12,390,689.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,511,020.38 : 21,399,667.52 = 8,981,085.50 : x
  2. Step 2: Convert to fraction form
    15,511,020.38/21,399,667.52 = 8,981,085.50/x
  3. Step 3: Cross multiply
    15,511,020.38x = 21,399,667.52 × 8,981,085.50
  4. Step 4: Simplify right side
    15,511,020.38x = 192,192,243,668,692.97
  5. Step 5: Solve for x
    x = 192,192,243,668,692.97/15,511,020.38
  6. Step 6: Final answer
    x = 12,390,689.91

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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.