Home / 28,281.60-42,400.80-17,185.92

Finding the Fourth Proportional to 28,281.60, 42,400.80 and 17,185.92

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Solution

The fourth proportional to 28,281.60, 42,400.80 and 17,185.92 is: 25,765.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,281.60 : 42,400.80 = 17,185.92 : x
  2. Step 2: Convert to fraction form
    28,281.60/42,400.80 = 17,185.92/x
  3. Step 3: Cross multiply
    28,281.60x = 42,400.80 × 17,185.92
  4. Step 4: Simplify right side
    28,281.60x = 728,696,756.74
  5. Step 5: Solve for x
    x = 728,696,756.74/28,281.60
  6. Step 6: Final answer
    x = 25,765.75

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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.