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Finding the Fourth Proportional to 30,155.82, 45,248.46 and 21,327.87

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Solution

The fourth proportional to 30,155.82, 45,248.46 and 21,327.87 is: 32,002.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,155.82 : 45,248.46 = 21,327.87 : x
  2. Step 2: Convert to fraction form
    30,155.82/45,248.46 = 21,327.87/x
  3. Step 3: Cross multiply
    30,155.82x = 45,248.46 × 21,327.87
  4. Step 4: Simplify right side
    30,155.82x = 965,053,482.25
  5. Step 5: Solve for x
    x = 965,053,482.25/30,155.82
  6. Step 6: Final answer
    x = 32,002.23

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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.