Home / 28,500.39-42,751.17-9,780.33

Finding the Fourth Proportional to 28,500.39, 42,751.17 and 9,780.33

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Solution

The fourth proportional to 28,500.39, 42,751.17 and 9,780.33 is: 14,670.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,500.39 : 42,751.17 = 9,780.33 : x
  2. Step 2: Convert to fraction form
    28,500.39/42,751.17 = 9,780.33/x
  3. Step 3: Cross multiply
    28,500.39x = 42,751.17 × 9,780.33
  4. Step 4: Simplify right side
    28,500.39x = 418,120,550.49
  5. Step 5: Solve for x
    x = 418,120,550.49/28,500.39
  6. Step 6: Final answer
    x = 14,670.70

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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.