Home / 10,340.41-15,393.66-10,278.90

Finding the Fourth Proportional to 10,340.41, 15,393.66 and 10,278.90

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Solution

The fourth proportional to 10,340.41, 15,393.66 and 10,278.90 is: 15,302.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,340.41 : 15,393.66 = 10,278.90 : x
  2. Step 2: Convert to fraction form
    10,340.41/15,393.66 = 10,278.90/x
  3. Step 3: Cross multiply
    10,340.41x = 15,393.66 × 10,278.90
  4. Step 4: Simplify right side
    10,340.41x = 158,229,901.46
  5. Step 5: Solve for x
    x = 158,229,901.46/10,340.41
  6. Step 6: Final answer
    x = 15,302.10

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.