Home / 12,382.23-18,551.78-10,315.52

Finding the Fourth Proportional to 12,382.23, 18,551.78 and 10,315.52

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Solution

The fourth proportional to 12,382.23, 18,551.78 and 10,315.52 is: 15,455.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,382.23 : 18,551.78 = 10,315.52 : x
  2. Step 2: Convert to fraction form
    12,382.23/18,551.78 = 10,315.52/x
  3. Step 3: Cross multiply
    12,382.23x = 18,551.78 × 10,315.52
  4. Step 4: Simplify right side
    12,382.23x = 191,371,113.29
  5. Step 5: Solve for x
    x = 191,371,113.29/12,382.23
  6. Step 6: Final answer
    x = 15,455.30

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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.