Home / 20,819,849.40-28,732,290.12-11,527,419.48

Finding the Fourth Proportional to 20,819,849.40, 28,732,290.12 and 11,527,419.48

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Solution

The fourth proportional to 20,819,849.40, 28,732,290.12 and 11,527,419.48 is: 15,908,336.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,819,849.40 : 28,732,290.12 = 11,527,419.48 : x
  2. Step 2: Convert to fraction form
    20,819,849.40/28,732,290.12 = 11,527,419.48/x
  3. Step 3: Cross multiply
    20,819,849.40x = 28,732,290.12 × 11,527,419.48
  4. Step 4: Simplify right side
    20,819,849.40x = 331,209,160,834,299.56
  5. Step 5: Solve for x
    x = 331,209,160,834,299.56/20,819,849.40
  6. Step 6: Final answer
    x = 15,908,336.05

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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.