Home / 26,686.38-36,784.79-21,012.13

Finding the Fourth Proportional to 26,686.38, 36,784.79 and 21,012.13

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Solution

The fourth proportional to 26,686.38, 36,784.79 and 21,012.13 is: 28,963.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    26,686.38 : 36,784.79 = 21,012.13 : x
  2. Step 2: Convert to fraction form
    26,686.38/36,784.79 = 21,012.13/x
  3. Step 3: Cross multiply
    26,686.38x = 36,784.79 × 21,012.13
  4. Step 4: Simplify right side
    26,686.38x = 772,926,789.50
  5. Step 5: Solve for x
    x = 772,926,789.50/26,686.38
  6. Step 6: Final answer
    x = 28,963.34

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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.