Home / 11,156.95-15,395.29-6,680.08

Finding the Fourth Proportional to 11,156.95, 15,395.29 and 6,680.08

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Solution

The fourth proportional to 11,156.95, 15,395.29 and 6,680.08 is: 9,217.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,156.95 : 15,395.29 = 6,680.08 : x
  2. Step 2: Convert to fraction form
    11,156.95/15,395.29 = 6,680.08/x
  3. Step 3: Cross multiply
    11,156.95x = 15,395.29 × 6,680.08
  4. Step 4: Simplify right side
    11,156.95x = 102,841,768.82
  5. Step 5: Solve for x
    x = 102,841,768.82/11,156.95
  6. Step 6: Final answer
    x = 9,217.73

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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.