Home / 10,931.41-15,084.75-6,215.38

Finding the Fourth Proportional to 10,931.41, 15,084.75 and 6,215.38

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Solution

The fourth proportional to 10,931.41, 15,084.75 and 6,215.38 is: 8,576.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,931.41 : 15,084.75 = 6,215.38 : x
  2. Step 2: Convert to fraction form
    10,931.41/15,084.75 = 6,215.38/x
  3. Step 3: Cross multiply
    10,931.41x = 15,084.75 × 6,215.38
  4. Step 4: Simplify right side
    10,931.41x = 93,757,378.03
  5. Step 5: Solve for x
    x = 93,757,378.03/10,931.41
  6. Step 6: Final answer
    x = 8,576.88

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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.