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Finding the Fourth Proportional to 18,438.30, 27,657.42 and 4,587.30

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Solution

The fourth proportional to 18,438.30, 27,657.42 and 4,587.30 is: 6,880.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,438.30 : 27,657.42 = 4,587.30 : x
  2. Step 2: Convert to fraction form
    18,438.30/27,657.42 = 4,587.30/x
  3. Step 3: Cross multiply
    18,438.30x = 27,657.42 × 4,587.30
  4. Step 4: Simplify right side
    18,438.30x = 126,872,882.77
  5. Step 5: Solve for x
    x = 126,872,882.77/18,438.30
  6. Step 6: Final answer
    x = 6,880.94

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.