Home / 20,937.68-28,901.58-13,866.38

Finding the Fourth Proportional to 20,937.68, 28,901.58 and 13,866.38

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Solution

The fourth proportional to 20,937.68, 28,901.58 and 13,866.38 is: 19,140.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,937.68 : 28,901.58 = 13,866.38 : x
  2. Step 2: Convert to fraction form
    20,937.68/28,901.58 = 13,866.38/x
  3. Step 3: Cross multiply
    20,937.68x = 28,901.58 × 13,866.38
  4. Step 4: Simplify right side
    20,937.68x = 400,760,290.88
  5. Step 5: Solve for x
    x = 400,760,290.88/20,937.68
  6. Step 6: Final answer
    x = 19,140.63

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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.