Home / 30,285.06-45,197.31-28,279.71

Finding the Fourth Proportional to 30,285.06, 45,197.31 and 28,279.71

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Solution

The fourth proportional to 30,285.06, 45,197.31 and 28,279.71 is: 42,204.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,285.06 : 45,197.31 = 28,279.71 : x
  2. Step 2: Convert to fraction form
    30,285.06/45,197.31 = 28,279.71/x
  3. Step 3: Cross multiply
    30,285.06x = 45,197.31 × 28,279.71
  4. Step 4: Simplify right side
    30,285.06x = 1,278,166,819.58
  5. Step 5: Solve for x
    x = 1,278,166,819.58/30,285.06
  6. Step 6: Final answer
    x = 42,204.53

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.