Home / 38,172.05-52,671.68-21,818.08

Finding the Fourth Proportional to 38,172.05, 52,671.68 and 21,818.08

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Solution

The fourth proportional to 38,172.05, 52,671.68 and 21,818.08 is: 30,105.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,172.05 : 52,671.68 = 21,818.08 : x
  2. Step 2: Convert to fraction form
    38,172.05/52,671.68 = 21,818.08/x
  3. Step 3: Cross multiply
    38,172.05x = 52,671.68 × 21,818.08
  4. Step 4: Simplify right side
    38,172.05x = 1,149,194,555.53
  5. Step 5: Solve for x
    x = 1,149,194,555.53/38,172.05
  6. Step 6: Final answer
    x = 30,105.65

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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.