Home / 28,186.45-42,242.95-15,705.97

Finding the Fourth Proportional to 28,186.45, 42,242.95 and 15,705.97

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Solution

The fourth proportional to 28,186.45, 42,242.95 and 15,705.97 is: 23,538.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,186.45 : 42,242.95 = 15,705.97 : x
  2. Step 2: Convert to fraction form
    28,186.45/42,242.95 = 15,705.97/x
  3. Step 3: Cross multiply
    28,186.45x = 42,242.95 × 15,705.97
  4. Step 4: Simplify right side
    28,186.45x = 663,466,419.44
  5. Step 5: Solve for x
    x = 663,466,419.44/28,186.45
  6. Step 6: Final answer
    x = 23,538.49

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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.