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Finding the Fourth Proportional to 28,113.66, 38,793.10 and 18,055.72

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Solution

The fourth proportional to 28,113.66, 38,793.10 and 18,055.72 is: 24,914.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,113.66 : 38,793.10 = 18,055.72 : x
  2. Step 2: Convert to fraction form
    28,113.66/38,793.10 = 18,055.72/x
  3. Step 3: Cross multiply
    28,113.66x = 38,793.10 × 18,055.72
  4. Step 4: Simplify right side
    28,113.66x = 700,437,351.53
  5. Step 5: Solve for x
    x = 700,437,351.53/28,113.66
  6. Step 6: Final answer
    x = 24,914.48

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Half scale
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Double scale
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.