Home / 18,778.08-28,159.83-10,008.21

Finding the Fourth Proportional to 18,778.08, 28,159.83 and 10,008.21

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Solution

The fourth proportional to 18,778.08, 28,159.83 and 10,008.21 is: 15,008.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,778.08 : 28,159.83 = 10,008.21 : x
  2. Step 2: Convert to fraction form
    18,778.08/28,159.83 = 10,008.21/x
  3. Step 3: Cross multiply
    18,778.08x = 28,159.83 × 10,008.21
  4. Step 4: Simplify right side
    18,778.08x = 281,829,492.20
  5. Step 5: Solve for x
    x = 281,829,492.20/18,778.08
  6. Step 6: Final answer
    x = 15,008.43

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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.