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Finding the Fourth Proportional to 18,672.72, 28,017.68 and 7,587.04

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Solution

The fourth proportional to 18,672.72, 28,017.68 and 7,587.04 is: 11,384.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,672.72 : 28,017.68 = 7,587.04 : x
  2. Step 2: Convert to fraction form
    18,672.72/28,017.68 = 7,587.04/x
  3. Step 3: Cross multiply
    18,672.72x = 28,017.68 × 7,587.04
  4. Step 4: Simplify right side
    18,672.72x = 212,571,258.87
  5. Step 5: Solve for x
    x = 212,571,258.87/18,672.72
  6. Step 6: Final answer
    x = 11,384.05

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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.