Home / 12,578.46-17,359.02-7,275.12

Finding the Fourth Proportional to 12,578.46, 17,359.02 and 7,275.12

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Solution

The fourth proportional to 12,578.46, 17,359.02 and 7,275.12 is: 10,040.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,578.46 : 17,359.02 = 7,275.12 : x
  2. Step 2: Convert to fraction form
    12,578.46/17,359.02 = 7,275.12/x
  3. Step 3: Cross multiply
    12,578.46x = 17,359.02 × 7,275.12
  4. Step 4: Simplify right side
    12,578.46x = 126,288,953.58
  5. Step 5: Solve for x
    x = 126,288,953.58/12,578.46
  6. Step 6: Final answer
    x = 10,040.10

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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.