Home / 20,881,123.11-31,284,625.86-8,723,830.68

Finding the Fourth Proportional to 20,881,123.11, 31,284,625.86 and 8,723,830.68

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Solution

The fourth proportional to 20,881,123.11, 31,284,625.86 and 8,723,830.68 is: 13,070,263.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,881,123.11 : 31,284,625.86 = 8,723,830.68 : x
  2. Step 2: Convert to fraction form
    20,881,123.11/31,284,625.86 = 8,723,830.68/x
  3. Step 3: Cross multiply
    20,881,123.11x = 31,284,625.86 × 8,723,830.68
  4. Step 4: Simplify right side
    20,881,123.11x = 272,921,778,889,789.38
  5. Step 5: Solve for x
    x = 272,921,778,889,789.38/20,881,123.11
  6. Step 6: Final answer
    x = 13,070,263.39

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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.