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Finding the Fourth Proportional to 18,873.92, 28,307.10 and 17,937.20

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Solution

The fourth proportional to 18,873.92, 28,307.10 and 17,937.20 is: 26,902.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,873.92 : 28,307.10 = 17,937.20 : x
  2. Step 2: Convert to fraction form
    18,873.92/28,307.10 = 17,937.20/x
  3. Step 3: Cross multiply
    18,873.92x = 28,307.10 × 17,937.20
  4. Step 4: Simplify right side
    18,873.92x = 507,750,114.12
  5. Step 5: Solve for x
    x = 507,750,114.12/18,873.92
  6. Step 6: Final answer
    x = 26,902.21

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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.