Home / 20,836.51-28,754.56-12,339.10

Finding the Fourth Proportional to 20,836.51, 28,754.56 and 12,339.10

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Solution

The fourth proportional to 20,836.51, 28,754.56 and 12,339.10 is: 17,028.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,836.51 : 28,754.56 = 12,339.10 : x
  2. Step 2: Convert to fraction form
    20,836.51/28,754.56 = 12,339.10/x
  3. Step 3: Cross multiply
    20,836.51x = 28,754.56 × 12,339.10
  4. Step 4: Simplify right side
    20,836.51x = 354,805,442.66
  5. Step 5: Solve for x
    x = 354,805,442.66/20,836.51
  6. Step 6: Final answer
    x = 17,028.07

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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.