Home / 28,393.20-42,615.18-28,287.36

Finding the Fourth Proportional to 28,393.20, 42,615.18 and 28,287.36

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Solution

The fourth proportional to 28,393.20, 42,615.18 and 28,287.36 is: 42,456.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,393.20 : 42,615.18 = 28,287.36 : x
  2. Step 2: Convert to fraction form
    28,393.20/42,615.18 = 28,287.36/x
  3. Step 3: Cross multiply
    28,393.20x = 42,615.18 × 28,287.36
  4. Step 4: Simplify right side
    28,393.20x = 1,205,470,938.12
  5. Step 5: Solve for x
    x = 1,205,470,938.12/28,393.20
  6. Step 6: Final answer
    x = 42,456.33

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1.5x scale

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.