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Finding the Fourth Proportional to 30,188.70, 45,264.69 and 13,545.63

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Solution

The fourth proportional to 30,188.70, 45,264.69 and 13,545.63 is: 20,310.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,188.70 : 45,264.69 = 13,545.63 : x
  2. Step 2: Convert to fraction form
    30,188.70/45,264.69 = 13,545.63/x
  3. Step 3: Cross multiply
    30,188.70x = 45,264.69 × 13,545.63
  4. Step 4: Simplify right side
    30,188.70x = 613,138,742.80
  5. Step 5: Solve for x
    x = 613,138,742.80/30,188.70
  6. Step 6: Final answer
    x = 20,310.21

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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.