Home / 28,081.68-38,752.86-15,335.12

Finding the Fourth Proportional to 28,081.68, 38,752.86 and 15,335.12

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Solution

The fourth proportional to 28,081.68, 38,752.86 and 15,335.12 is: 21,162.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,081.68 : 38,752.86 = 15,335.12 : x
  2. Step 2: Convert to fraction form
    28,081.68/38,752.86 = 15,335.12/x
  3. Step 3: Cross multiply
    28,081.68x = 38,752.86 × 15,335.12
  4. Step 4: Simplify right side
    28,081.68x = 594,279,681.77
  5. Step 5: Solve for x
    x = 594,279,681.77/28,081.68
  6. Step 6: Final answer
    x = 21,162.54

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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.