Home / 28,404,449.20-42,585,678.60-15,639,367.60

Finding the Fourth Proportional to 28,404,449.20, 42,585,678.60 and 15,639,367.60

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Solution

The fourth proportional to 28,404,449.20, 42,585,678.60 and 15,639,367.60 is: 23,447,491.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,404,449.20 : 42,585,678.60 = 15,639,367.60 : x
  2. Step 2: Convert to fraction form
    28,404,449.20/42,585,678.60 = 15,639,367.60/x
  3. Step 3: Cross multiply
    28,404,449.20x = 42,585,678.60 × 15,639,367.60
  4. Step 4: Simplify right side
    28,404,449.20x = 666,013,082,120,853.38
  5. Step 5: Solve for x
    x = 666,013,082,120,853.38/28,404,449.20
  6. Step 6: Final answer
    x = 23,447,491.53

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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.