Home / 28,081.92-38,752.80-15,506.56

Finding the Fourth Proportional to 28,081.92, 38,752.80 and 15,506.56

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Solution

The fourth proportional to 28,081.92, 38,752.80 and 15,506.56 is: 21,398.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,081.92 : 38,752.80 = 15,506.56 : x
  2. Step 2: Convert to fraction form
    28,081.92/38,752.80 = 15,506.56/x
  3. Step 3: Cross multiply
    28,081.92x = 38,752.80 × 15,506.56
  4. Step 4: Simplify right side
    28,081.92x = 600,922,618.37
  5. Step 5: Solve for x
    x = 600,922,618.37/28,081.92
  6. Step 6: Final answer
    x = 21,398.91

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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.