Home / 28,065.92-38,721.92-18,636.36

Finding the Fourth Proportional to 28,065.92, 38,721.92 and 18,636.36

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Solution

The fourth proportional to 28,065.92, 38,721.92 and 18,636.36 is: 25,712.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,065.92 : 38,721.92 = 18,636.36 : x
  2. Step 2: Convert to fraction form
    28,065.92/38,721.92 = 18,636.36/x
  3. Step 3: Cross multiply
    28,065.92x = 38,721.92 × 18,636.36
  4. Step 4: Simplify right side
    28,065.92x = 721,635,641.01
  5. Step 5: Solve for x
    x = 721,635,641.01/28,065.92
  6. Step 6: Final answer
    x = 25,712.17

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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.