Home / 28,250.25-38,985.75-15,675

Finding the Fourth Proportional to 28,250.25, 38,985.75 and 15,675

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Solution

The fourth proportional to 28,250.25, 38,985.75 and 15,675 is: 21,631.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,250.25 : 38,985.75 = 15,675 : x
  2. Step 2: Convert to fraction form
    28,250.25/38,985.75 = 15,675/x
  3. Step 3: Cross multiply
    28,250.25x = 38,985.75 × 15,675
  4. Step 4: Simplify right side
    28,250.25x = 611,101,631.25
  5. Step 5: Solve for x
    x = 611,101,631.25/28,250.25
  6. Step 6: Final answer
    x = 21,631.72

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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.