Home / 28,033.97-38,686.85-15,287.15

Finding the Fourth Proportional to 28,033.97, 38,686.85 and 15,287.15

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Solution

The fourth proportional to 28,033.97, 38,686.85 and 15,287.15 is: 21,096.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,033.97 : 38,686.85 = 15,287.15 : x
  2. Step 2: Convert to fraction form
    28,033.97/38,686.85 = 15,287.15/x
  3. Step 3: Cross multiply
    28,033.97x = 38,686.85 × 15,287.15
  4. Step 4: Simplify right side
    28,033.97x = 591,411,409.11
  5. Step 5: Solve for x
    x = 591,411,409.11/28,033.97
  6. Step 6: Final answer
    x = 21,096.25

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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.