Home / 20,139,155.80-27,791,952.06-10,971,770.20

Finding the Fourth Proportional to 20,139,155.80, 27,791,952.06 and 10,971,770.20

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Solution

The fourth proportional to 20,139,155.80, 27,791,952.06 and 10,971,770.20 is: 15,140,997.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,139,155.80 : 27,791,952.06 = 10,971,770.20 : x
  2. Step 2: Convert to fraction form
    20,139,155.80/27,791,952.06 = 10,971,770.20/x
  3. Step 3: Cross multiply
    20,139,155.80x = 27,791,952.06 × 10,971,770.20
  4. Step 4: Simplify right side
    20,139,155.80x = 304,926,911,411,736.56
  5. Step 5: Solve for x
    x = 304,926,911,411,736.56/20,139,155.80
  6. Step 6: Final answer
    x = 15,140,997.69

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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.