Home / 28,174,909.60-42,262,364.40-10,221,680.80

Finding the Fourth Proportional to 28,174,909.60, 42,262,364.40 and 10,221,680.80

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Solution

The fourth proportional to 28,174,909.60, 42,262,364.40 and 10,221,680.80 is: 15,332,521.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,174,909.60 : 42,262,364.40 = 10,221,680.80 : x
  2. Step 2: Convert to fraction form
    28,174,909.60/42,262,364.40 = 10,221,680.80/x
  3. Step 3: Cross multiply
    28,174,909.60x = 42,262,364.40 × 10,221,680.80
  4. Step 4: Simplify right side
    28,174,909.60x = 431,992,398,750,083.56
  5. Step 5: Solve for x
    x = 431,992,398,750,083.56/28,174,909.60
  6. Step 6: Final answer
    x = 15,332,521.20

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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.