Home / 15,679,707.20-21,587,943.24-13,378,633.28

Finding the Fourth Proportional to 15,679,707.20, 21,587,943.24 and 13,378,633.28

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Solution

The fourth proportional to 15,679,707.20, 21,587,943.24 and 13,378,633.28 is: 18,419,806.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,679,707.20 : 21,587,943.24 = 13,378,633.28 : x
  2. Step 2: Convert to fraction form
    15,679,707.20/21,587,943.24 = 13,378,633.28/x
  3. Step 3: Cross multiply
    15,679,707.20x = 21,587,943.24 × 13,378,633.28
  4. Step 4: Simplify right side
    15,679,707.20x = 288,817,175,877,415
  5. Step 5: Solve for x
    x = 288,817,175,877,415/15,679,707.20
  6. Step 6: Final answer
    x = 18,419,806.71

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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.