Home / 12,382.36-18,571.02-10,315.72

Finding the Fourth Proportional to 12,382.36, 18,571.02 and 10,315.72

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Solution

The fourth proportional to 12,382.36, 18,571.02 and 10,315.72 is: 15,471.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,382.36 : 18,571.02 = 10,315.72 : x
  2. Step 2: Convert to fraction form
    12,382.36/18,571.02 = 10,315.72/x
  3. Step 3: Cross multiply
    12,382.36x = 18,571.02 × 10,315.72
  4. Step 4: Simplify right side
    12,382.36x = 191,573,442.43
  5. Step 5: Solve for x
    x = 191,573,442.43/12,382.36
  6. Step 6: Final answer
    x = 15,471.48

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.