Home / 20,206,543.40-30,328,977.42-12,506,897.54

Finding the Fourth Proportional to 20,206,543.40, 30,328,977.42 and 12,506,897.54

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Solution

The fourth proportional to 20,206,543.40, 30,328,977.42 and 12,506,897.54 is: 18,772,206.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,206,543.40 : 30,328,977.42 = 12,506,897.54 : x
  2. Step 2: Convert to fraction form
    20,206,543.40/30,328,977.42 = 12,506,897.54/x
  3. Step 3: Cross multiply
    20,206,543.40x = 30,328,977.42 × 12,506,897.54
  4. Step 4: Simplify right side
    20,206,543.40x = 379,321,413,160,736
  5. Step 5: Solve for x
    x = 379,321,413,160,736/20,206,543.40
  6. Step 6: Final answer
    x = 18,772,206.89

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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.