Home / 20,535,754.80-28,330,443.72-12,382,463.28

Finding the Fourth Proportional to 20,535,754.80, 28,330,443.72 and 12,382,463.28

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Solution

The fourth proportional to 20,535,754.80, 28,330,443.72 and 12,382,463.28 is: 17,082,434.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,535,754.80 : 28,330,443.72 = 12,382,463.28 : x
  2. Step 2: Convert to fraction form
    20,535,754.80/28,330,443.72 = 12,382,463.28/x
  3. Step 3: Cross multiply
    20,535,754.80x = 28,330,443.72 × 12,382,463.28
  4. Step 4: Simplify right side
    20,535,754.80x = 350,800,679,069,006.56
  5. Step 5: Solve for x
    x = 350,800,679,069,006.56/20,535,754.80
  6. Step 6: Final answer
    x = 17,082,434.15

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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.