Home / 12,127,939.80-18,191,909.70-8,709,002.70

Finding the Fourth Proportional to 12,127,939.80, 18,191,909.70 and 8,709,002.70

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Solution

The fourth proportional to 12,127,939.80, 18,191,909.70 and 8,709,002.70 is: 13,063,504.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,127,939.80 : 18,191,909.70 = 8,709,002.70 : x
  2. Step 2: Convert to fraction form
    12,127,939.80/18,191,909.70 = 8,709,002.70/x
  3. Step 3: Cross multiply
    12,127,939.80x = 18,191,909.70 × 8,709,002.70
  4. Step 4: Simplify right side
    12,127,939.80x = 158,433,390,695,456.16
  5. Step 5: Solve for x
    x = 158,433,390,695,456.16/12,127,939.80
  6. Step 6: Final answer
    x = 13,063,504.05

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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.