Home / 10,931.28-15,082.57-6,218.16

Finding the Fourth Proportional to 10,931.28, 15,082.57 and 6,218.16

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Solution

The fourth proportional to 10,931.28, 15,082.57 and 6,218.16 is: 8,579.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,931.28 : 15,082.57 = 6,218.16 : x
  2. Step 2: Convert to fraction form
    10,931.28/15,082.57 = 6,218.16/x
  3. Step 3: Cross multiply
    10,931.28x = 15,082.57 × 6,218.16
  4. Step 4: Simplify right side
    10,931.28x = 93,785,833.47
  5. Step 5: Solve for x
    x = 93,785,833.47/10,931.28
  6. Step 6: Final answer
    x = 8,579.58

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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.