Home / 28,460.25-39,275.55-15,885

Finding the Fourth Proportional to 28,460.25, 39,275.55 and 15,885

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Solution

The fourth proportional to 28,460.25, 39,275.55 and 15,885 is: 21,921.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,460.25 : 39,275.55 = 15,885 : x
  2. Step 2: Convert to fraction form
    28,460.25/39,275.55 = 15,885/x
  3. Step 3: Cross multiply
    28,460.25x = 39,275.55 × 15,885
  4. Step 4: Simplify right side
    28,460.25x = 623,892,111.75
  5. Step 5: Solve for x
    x = 623,892,111.75/28,460.25
  6. Step 6: Final answer
    x = 21,921.53

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Similar ratio
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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.