Home / 28,162.74-38,823.18-21,436.65

Finding the Fourth Proportional to 28,162.74, 38,823.18 and 21,436.65

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Solution

The fourth proportional to 28,162.74, 38,823.18 and 21,436.65 is: 29,551.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,162.74 : 38,823.18 = 21,436.65 : x
  2. Step 2: Convert to fraction form
    28,162.74/38,823.18 = 21,436.65/x
  3. Step 3: Cross multiply
    28,162.74x = 38,823.18 × 21,436.65
  4. Step 4: Simplify right side
    28,162.74x = 832,238,921.55
  5. Step 5: Solve for x
    x = 832,238,921.55/28,162.74
  6. Step 6: Final answer
    x = 29,551.06

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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.