Home / 20,819,810.05-31,236,248.28-12,520,166.01

Finding the Fourth Proportional to 20,819,810.05, 31,236,248.28 and 12,520,166.01

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Solution

The fourth proportional to 20,819,810.05, 31,236,248.28 and 12,520,166.01 is: 18,784,177.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,819,810.05 : 31,236,248.28 = 12,520,166.01 : x
  2. Step 2: Convert to fraction form
    20,819,810.05/31,236,248.28 = 12,520,166.01/x
  3. Step 3: Cross multiply
    20,819,810.05x = 31,236,248.28 × 12,520,166.01
  4. Step 4: Simplify right side
    20,819,810.05x = 391,083,013,995,177
  5. Step 5: Solve for x
    x = 391,083,013,995,177/20,819,810.05
  6. Step 6: Final answer
    x = 18,784,177.81

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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.