Home / 12,148.12-16,769.88-9,009.78

Finding the Fourth Proportional to 12,148.12, 16,769.88 and 9,009.78

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Solution

The fourth proportional to 12,148.12, 16,769.88 and 9,009.78 is: 12,437.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,148.12 : 16,769.88 = 9,009.78 : x
  2. Step 2: Convert to fraction form
    12,148.12/16,769.88 = 9,009.78/x
  3. Step 3: Cross multiply
    12,148.12x = 16,769.88 × 9,009.78
  4. Step 4: Simplify right side
    12,148.12x = 151,092,929.43
  5. Step 5: Solve for x
    x = 151,092,929.43/12,148.12
  6. Step 6: Final answer
    x = 12,437.56

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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.