Home / 28,630.06-39,509.42-15,885.18

Finding the Fourth Proportional to 28,630.06, 39,509.42 and 15,885.18

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Solution

The fourth proportional to 28,630.06, 39,509.42 and 15,885.18 is: 21,921.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,630.06 : 39,509.42 = 15,885.18 : x
  2. Step 2: Convert to fraction form
    28,630.06/39,509.42 = 15,885.18/x
  3. Step 3: Cross multiply
    28,630.06x = 39,509.42 × 15,885.18
  4. Step 4: Simplify right side
    28,630.06x = 627,614,168.97
  5. Step 5: Solve for x
    x = 627,614,168.97/28,630.06
  6. Step 6: Final answer
    x = 21,921.51

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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.