Home / 28,433.97-39,237.93-15,687.18

Finding the Fourth Proportional to 28,433.97, 39,237.93 and 15,687.18

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Solution

The fourth proportional to 28,433.97, 39,237.93 and 15,687.18 is: 21,647.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,433.97 : 39,237.93 = 15,687.18 : x
  2. Step 2: Convert to fraction form
    28,433.97/39,237.93 = 15,687.18/x
  3. Step 3: Cross multiply
    28,433.97x = 39,237.93 × 15,687.18
  4. Step 4: Simplify right side
    28,433.97x = 615,532,470.74
  5. Step 5: Solve for x
    x = 615,532,470.74/28,433.97
  6. Step 6: Final answer
    x = 21,647.79

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.