Home / 15,159.66-20,918.90-11,182.96

Finding the Fourth Proportional to 15,159.66, 20,918.90 and 11,182.96

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Solution

The fourth proportional to 15,159.66, 20,918.90 and 11,182.96 is: 15,431.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,159.66 : 20,918.90 = 11,182.96 : x
  2. Step 2: Convert to fraction form
    15,159.66/20,918.90 = 11,182.96/x
  3. Step 3: Cross multiply
    15,159.66x = 20,918.90 × 11,182.96
  4. Step 4: Simplify right side
    15,159.66x = 233,935,221.94
  5. Step 5: Solve for x
    x = 233,935,221.94/15,159.66
  6. Step 6: Final answer
    x = 15,431.43

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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.