Home / 20,959.32-28,936.19-13,005.93

Finding the Fourth Proportional to 20,959.32, 28,936.19 and 13,005.93

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Solution

The fourth proportional to 20,959.32, 28,936.19 and 13,005.93 is: 17,955.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,959.32 : 28,936.19 = 13,005.93 : x
  2. Step 2: Convert to fraction form
    20,959.32/28,936.19 = 13,005.93/x
  3. Step 3: Cross multiply
    20,959.32x = 28,936.19 × 13,005.93
  4. Step 4: Simplify right side
    20,959.32x = 376,342,129.47
  5. Step 5: Solve for x
    x = 376,342,129.47/20,959.32
  6. Step 6: Final answer
    x = 17,955.83

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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.