Home / 18,731.76-25,838.40-12,015.12

Finding the Fourth Proportional to 18,731.76, 25,838.40 and 12,015.12

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Solution

The fourth proportional to 18,731.76, 25,838.40 and 12,015.12 is: 16,573.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,731.76 : 25,838.40 = 12,015.12 : x
  2. Step 2: Convert to fraction form
    18,731.76/25,838.40 = 12,015.12/x
  3. Step 3: Cross multiply
    18,731.76x = 25,838.40 × 12,015.12
  4. Step 4: Simplify right side
    18,731.76x = 310,451,476.61
  5. Step 5: Solve for x
    x = 310,451,476.61/18,731.76
  6. Step 6: Final answer
    x = 16,573.53

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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.