Home / 11,390.42-15,718.32-6,610.12

Finding the Fourth Proportional to 11,390.42, 15,718.32 and 6,610.12

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Solution

The fourth proportional to 11,390.42, 15,718.32 and 6,610.12 is: 9,121.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,390.42 : 15,718.32 = 6,610.12 : x
  2. Step 2: Convert to fraction form
    11,390.42/15,718.32 = 6,610.12/x
  3. Step 3: Cross multiply
    11,390.42x = 15,718.32 × 6,610.12
  4. Step 4: Simplify right side
    11,390.42x = 103,899,981.40
  5. Step 5: Solve for x
    x = 103,899,981.40/11,390.42
  6. Step 6: Final answer
    x = 9,121.70

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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.