Home / 12,502,403.80-18,739,608.90-7,113,635.80

Finding the Fourth Proportional to 12,502,403.80, 18,739,608.90 and 7,113,635.80

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Solution

The fourth proportional to 12,502,403.80, 18,739,608.90 and 7,113,635.80 is: 10,662,489.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,502,403.80 : 18,739,608.90 = 7,113,635.80 : x
  2. Step 2: Convert to fraction form
    12,502,403.80/18,739,608.90 = 7,113,635.80/x
  3. Step 3: Cross multiply
    12,502,403.80x = 18,739,608.90 × 7,113,635.80
  4. Step 4: Simplify right side
    12,502,403.80x = 133,306,752,749,038.61
  5. Step 5: Solve for x
    x = 133,306,752,749,038.61/12,502,403.80
  6. Step 6: Final answer
    x = 10,662,489.78

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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.