Home / 18,427.64-25,428.80-11,354.18

Finding the Fourth Proportional to 18,427.64, 25,428.80 and 11,354.18

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Solution

The fourth proportional to 18,427.64, 25,428.80 and 11,354.18 is: 15,667.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,427.64 : 25,428.80 = 11,354.18 : x
  2. Step 2: Convert to fraction form
    18,427.64/25,428.80 = 11,354.18/x
  3. Step 3: Cross multiply
    18,427.64x = 25,428.80 × 11,354.18
  4. Step 4: Simplify right side
    18,427.64x = 288,723,115.61
  5. Step 5: Solve for x
    x = 288,723,115.61/18,427.64
  6. Step 6: Final answer
    x = 15,667.94

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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.