Home / 28,515.80-42,708.90-14,648.60

Finding the Fourth Proportional to 28,515.80, 42,708.90 and 14,648.60

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Solution

The fourth proportional to 28,515.80, 42,708.90 and 14,648.60 is: 21,939.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,515.80 : 42,708.90 = 14,648.60 : x
  2. Step 2: Convert to fraction form
    28,515.80/42,708.90 = 14,648.60/x
  3. Step 3: Cross multiply
    28,515.80x = 42,708.90 × 14,648.60
  4. Step 4: Simplify right side
    28,515.80x = 625,625,592.54
  5. Step 5: Solve for x
    x = 625,625,592.54/28,515.80
  6. Step 6: Final answer
    x = 21,939.61

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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.