Home / 18,655.31-25,766.20-12,356.75

Finding the Fourth Proportional to 18,655.31, 25,766.20 and 12,356.75

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Solution

The fourth proportional to 18,655.31, 25,766.20 and 12,356.75 is: 17,066.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,655.31 : 25,766.20 = 12,356.75 : x
  2. Step 2: Convert to fraction form
    18,655.31/25,766.20 = 12,356.75/x
  3. Step 3: Cross multiply
    18,655.31x = 25,766.20 × 12,356.75
  4. Step 4: Simplify right side
    18,655.31x = 318,386,571.71
  5. Step 5: Solve for x
    x = 318,386,571.71/18,655.31
  6. Step 6: Final answer
    x = 17,066.80

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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.