Home / 28,186.76-42,243.40-15,706.28

Finding the Fourth Proportional to 28,186.76, 42,243.40 and 15,706.28

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Solution

The fourth proportional to 28,186.76, 42,243.40 and 15,706.28 is: 23,538.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,186.76 : 42,243.40 = 15,706.28 : x
  2. Step 2: Convert to fraction form
    28,186.76/42,243.40 = 15,706.28/x
  3. Step 3: Cross multiply
    28,186.76x = 42,243.40 × 15,706.28
  4. Step 4: Simplify right side
    28,186.76x = 663,486,668.55
  5. Step 5: Solve for x
    x = 663,486,668.55/28,186.76
  6. Step 6: Final answer
    x = 23,538.95

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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.