Home / 20,986,423.58-28,960,876.53-11,438,788.19

Finding the Fourth Proportional to 20,986,423.58, 28,960,876.53 and 11,438,788.19

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Solution

The fourth proportional to 20,986,423.58, 28,960,876.53 and 11,438,788.19 is: 15,785,316.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,986,423.58 : 28,960,876.53 = 11,438,788.19 : x
  2. Step 2: Convert to fraction form
    20,986,423.58/28,960,876.53 = 11,438,788.19/x
  3. Step 3: Cross multiply
    20,986,423.58x = 28,960,876.53 × 11,438,788.19
  4. Step 4: Simplify right side
    20,986,423.58x = 331,277,332,278,607.81
  5. Step 5: Solve for x
    x = 331,277,332,278,607.81/20,986,423.58
  6. Step 6: Final answer
    x = 15,785,316.21

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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.