Home / 11,156.42-15,397.07-7,126.95

Finding the Fourth Proportional to 11,156.42, 15,397.07 and 7,126.95

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Solution

The fourth proportional to 11,156.42, 15,397.07 and 7,126.95 is: 9,835.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,156.42 : 15,397.07 = 7,126.95 : x
  2. Step 2: Convert to fraction form
    11,156.42/15,397.07 = 7,126.95/x
  3. Step 3: Cross multiply
    11,156.42x = 15,397.07 × 7,126.95
  4. Step 4: Simplify right side
    11,156.42x = 109,734,112.40
  5. Step 5: Solve for x
    x = 109,734,112.40/11,156.42
  6. Step 6: Final answer
    x = 9,835.97

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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.