Home / 28,126.42-42,189.67-11,486.45

Finding the Fourth Proportional to 28,126.42, 42,189.67 and 11,486.45

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Solution

The fourth proportional to 28,126.42, 42,189.67 and 11,486.45 is: 17,229.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,126.42 : 42,189.67 = 11,486.45 : x
  2. Step 2: Convert to fraction form
    28,126.42/42,189.67 = 11,486.45/x
  3. Step 3: Cross multiply
    28,126.42x = 42,189.67 × 11,486.45
  4. Step 4: Simplify right side
    28,126.42x = 484,609,534.97
  5. Step 5: Solve for x
    x = 484,609,534.97/28,126.42
  6. Step 6: Final answer
    x = 17,229.69

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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.