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Finding the Fourth Proportional to 18,894.48, 28,342.16 and 8,362.24

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Solution

The fourth proportional to 18,894.48, 28,342.16 and 8,362.24 is: 12,543.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,894.48 : 28,342.16 = 8,362.24 : x
  2. Step 2: Convert to fraction form
    18,894.48/28,342.16 = 8,362.24/x
  3. Step 3: Cross multiply
    18,894.48x = 28,342.16 × 8,362.24
  4. Step 4: Simplify right side
    18,894.48x = 237,003,944.04
  5. Step 5: Solve for x
    x = 237,003,944.04/18,894.48
  6. Step 6: Final answer
    x = 12,543.55

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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.