Home / 18,340.40-25,309.86-10,787.05

Finding the Fourth Proportional to 18,340.40, 25,309.86 and 10,787.05

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Solution

The fourth proportional to 18,340.40, 25,309.86 and 10,787.05 is: 14,886.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,340.40 : 25,309.86 = 10,787.05 : x
  2. Step 2: Convert to fraction form
    18,340.40/25,309.86 = 10,787.05/x
  3. Step 3: Cross multiply
    18,340.40x = 25,309.86 × 10,787.05
  4. Step 4: Simplify right side
    18,340.40x = 273,018,716.50
  5. Step 5: Solve for x
    x = 273,018,716.50/18,340.40
  6. Step 6: Final answer
    x = 14,886.19

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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.