Home / 20,888.47-28,827.62-11,935.79

Finding the Fourth Proportional to 20,888.47, 28,827.62 and 11,935.79

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Solution

The fourth proportional to 20,888.47, 28,827.62 and 11,935.79 is: 16,472.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,888.47 : 28,827.62 = 11,935.79 : x
  2. Step 2: Convert to fraction form
    20,888.47/28,827.62 = 11,935.79/x
  3. Step 3: Cross multiply
    20,888.47x = 28,827.62 × 11,935.79
  4. Step 4: Simplify right side
    20,888.47x = 344,080,214.70
  5. Step 5: Solve for x
    x = 344,080,214.70/20,888.47
  6. Step 6: Final answer
    x = 16,472.25

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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.