Home / 20,139,148.80-27,791,942.40-10,971,763.20

Finding the Fourth Proportional to 20,139,148.80, 27,791,942.40 and 10,971,763.20

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Solution

The fourth proportional to 20,139,148.80, 27,791,942.40 and 10,971,763.20 is: 15,140,988.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,139,148.80 : 27,791,942.40 = 10,971,763.20 : x
  2. Step 2: Convert to fraction form
    20,139,148.80/27,791,942.40 = 10,971,763.20/x
  3. Step 3: Cross multiply
    20,139,148.80x = 27,791,942.40 × 10,971,763.20
  4. Step 4: Simplify right side
    20,139,148.80x = 304,926,610,880,839.62
  5. Step 5: Solve for x
    x = 304,926,610,880,839.62/20,139,148.80
  6. Step 6: Final answer
    x = 15,140,988.03

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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.