Home / 20,199,805.20-30,299,707.80-10,098,781.20

Finding the Fourth Proportional to 20,199,805.20, 30,299,707.80 and 10,098,781.20

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Solution

The fourth proportional to 20,199,805.20, 30,299,707.80 and 10,098,781.20 is: 15,148,171.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,199,805.20 : 30,299,707.80 = 10,098,781.20 : x
  2. Step 2: Convert to fraction form
    20,199,805.20/30,299,707.80 = 10,098,781.20/x
  3. Step 3: Cross multiply
    20,199,805.20x = 30,299,707.80 × 10,098,781.20
  4. Step 4: Simplify right side
    20,199,805.20x = 305,990,119,496,133.38
  5. Step 5: Solve for x
    x = 305,990,119,496,133.38/20,199,805.20
  6. Step 6: Final answer
    x = 15,148,171.80

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1.5x scale

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.