Home / 20,131,834.40-30,138,769.20-17,772,538.40

Finding the Fourth Proportional to 20,131,834.40, 30,138,769.20 and 17,772,538.40

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Solution

The fourth proportional to 20,131,834.40, 30,138,769.20 and 17,772,538.40 is: 26,606,737.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,131,834.40 : 30,138,769.20 = 17,772,538.40 : x
  2. Step 2: Convert to fraction form
    20,131,834.40/30,138,769.20 = 17,772,538.40/x
  3. Step 3: Cross multiply
    20,131,834.40x = 30,138,769.20 × 17,772,538.40
  4. Step 4: Simplify right side
    20,131,834.40x = 535,642,432,935,737.25
  5. Step 5: Solve for x
    x = 535,642,432,935,737.25/20,131,834.40
  6. Step 6: Final answer
    x = 26,606,737.48

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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.