Home / 11,176.32-15,422.64-6,139.56

Finding the Fourth Proportional to 11,176.32, 15,422.64 and 6,139.56

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Solution

The fourth proportional to 11,176.32, 15,422.64 and 6,139.56 is: 8,472.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,176.32 : 15,422.64 = 6,139.56 : x
  2. Step 2: Convert to fraction form
    11,176.32/15,422.64 = 6,139.56/x
  3. Step 3: Cross multiply
    11,176.32x = 15,422.64 × 6,139.56
  4. Step 4: Simplify right side
    11,176.32x = 94,688,223.64
  5. Step 5: Solve for x
    x = 94,688,223.64/11,176.32
  6. Step 6: Final answer
    x = 8,472.22

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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.