Home / 20,139,837.30-30,138,897.15-18,439,226.10

Finding the Fourth Proportional to 20,139,837.30, 30,138,897.15 and 18,439,226.10

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Solution

The fourth proportional to 20,139,837.30, 30,138,897.15 and 18,439,226.10 is: 27,593,963.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,139,837.30 : 30,138,897.15 = 18,439,226.10 : x
  2. Step 2: Convert to fraction form
    20,139,837.30/30,138,897.15 = 18,439,226.10/x
  3. Step 3: Cross multiply
    20,139,837.30x = 30,138,897.15 × 18,439,226.10
  4. Step 4: Simplify right side
    20,139,837.30x = 555,737,938,953,495.62
  5. Step 5: Solve for x
    x = 555,737,938,953,495.62/20,139,837.30
  6. Step 6: Final answer
    x = 27,593,963.68

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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.