Home / 10,952.41-15,115.80-6,478.78

Finding the Fourth Proportional to 10,952.41, 15,115.80 and 6,478.78

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Solution

The fourth proportional to 10,952.41, 15,115.80 and 6,478.78 is: 8,941.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,952.41 : 15,115.80 = 6,478.78 : x
  2. Step 2: Convert to fraction form
    10,952.41/15,115.80 = 6,478.78/x
  3. Step 3: Cross multiply
    10,952.41x = 15,115.80 × 6,478.78
  4. Step 4: Simplify right side
    10,952.41x = 97,931,942.72
  5. Step 5: Solve for x
    x = 97,931,942.72/10,952.41
  6. Step 6: Final answer
    x = 8,941.59

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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.