Home / 28,378,553.56-42,572,415.42-11,986,302.28

Finding the Fourth Proportional to 28,378,553.56, 42,572,415.42 and 11,986,302.28

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Solution

The fourth proportional to 28,378,553.56, 42,572,415.42 and 11,986,302.28 is: 17,981,390.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,378,553.56 : 42,572,415.42 = 11,986,302.28 : x
  2. Step 2: Convert to fraction form
    28,378,553.56/42,572,415.42 = 11,986,302.28/x
  3. Step 3: Cross multiply
    28,378,553.56x = 42,572,415.42 × 11,986,302.28
  4. Step 4: Simplify right side
    28,378,553.56x = 510,285,840,013,853.12
  5. Step 5: Solve for x
    x = 510,285,840,013,853.12/28,378,553.56
  6. Step 6: Final answer
    x = 17,981,390.03

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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.