Home / 18,787.11-25,925.90-10,403.43

Finding the Fourth Proportional to 18,787.11, 25,925.90 and 10,403.43

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Solution

The fourth proportional to 18,787.11, 25,925.90 and 10,403.43 is: 14,356.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,787.11 : 25,925.90 = 10,403.43 : x
  2. Step 2: Convert to fraction form
    18,787.11/25,925.90 = 10,403.43/x
  3. Step 3: Cross multiply
    18,787.11x = 25,925.90 × 10,403.43
  4. Step 4: Simplify right side
    18,787.11x = 269,718,233.82
  5. Step 5: Solve for x
    x = 269,718,233.82/18,787.11
  6. Step 6: Final answer
    x = 14,356.56

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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.