Home / 28,215.07-38,928.92-22,228.16

Finding the Fourth Proportional to 28,215.07, 38,928.92 and 22,228.16

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Solution

The fourth proportional to 28,215.07, 38,928.92 and 22,228.16 is: 30,668.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,215.07 : 38,928.92 = 22,228.16 : x
  2. Step 2: Convert to fraction form
    28,215.07/38,928.92 = 22,228.16/x
  3. Step 3: Cross multiply
    28,215.07x = 38,928.92 × 22,228.16
  4. Step 4: Simplify right side
    28,215.07x = 865,317,956.60
  5. Step 5: Solve for x
    x = 865,317,956.60/28,215.07
  6. Step 6: Final answer
    x = 30,668.65

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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.