Home / 22,815,210.78-31,484,990.88-13,157,418.78

Finding the Fourth Proportional to 22,815,210.78, 31,484,990.88 and 13,157,418.78

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Solution

The fourth proportional to 22,815,210.78, 31,484,990.88 and 13,157,418.78 is: 18,157,237.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,815,210.78 : 31,484,990.88 = 13,157,418.78 : x
  2. Step 2: Convert to fraction form
    22,815,210.78/31,484,990.88 = 13,157,418.78/x
  3. Step 3: Cross multiply
    22,815,210.78x = 31,484,990.88 × 13,157,418.78
  4. Step 4: Simplify right side
    22,815,210.78x = 414,261,210,292,640.69
  5. Step 5: Solve for x
    x = 414,261,210,292,640.69/22,815,210.78
  6. Step 6: Final answer
    x = 18,157,237.92

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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.