Home / 20,139,152.80-27,791,947.92-10,971,767.20

Finding the Fourth Proportional to 20,139,152.80, 27,791,947.92 and 10,971,767.20

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Solution

The fourth proportional to 20,139,152.80, 27,791,947.92 and 10,971,767.20 is: 15,140,993.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,139,152.80 : 27,791,947.92 = 10,971,767.20 : x
  2. Step 2: Convert to fraction form
    20,139,152.80/27,791,947.92 = 10,971,767.20/x
  3. Step 3: Cross multiply
    20,139,152.80x = 27,791,947.92 × 10,971,767.20
  4. Step 4: Simplify right side
    20,139,152.80x = 304,926,782,612,764.25
  5. Step 5: Solve for x
    x = 304,926,782,612,764.25/20,139,152.80
  6. Step 6: Final answer
    x = 15,140,993.55

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.