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Finding the Fourth Proportional to 28,615.88, 42,935.63 and 15,452.75

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Solution

The fourth proportional to 28,615.88, 42,935.63 and 15,452.75 is: 23,185.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,615.88 : 42,935.63 = 15,452.75 : x
  2. Step 2: Convert to fraction form
    28,615.88/42,935.63 = 15,452.75/x
  3. Step 3: Cross multiply
    28,615.88x = 42,935.63 × 15,452.75
  4. Step 4: Simplify right side
    28,615.88x = 663,473,264.54
  5. Step 5: Solve for x
    x = 663,473,264.54/28,615.88
  6. Step 6: Final answer
    x = 23,185.50

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.