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Finding the Fourth Proportional to 28,223.65, 38,948.07 and 16,286.68

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Solution

The fourth proportional to 28,223.65, 38,948.07 and 16,286.68 is: 22,475.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,223.65 : 38,948.07 = 16,286.68 : x
  2. Step 2: Convert to fraction form
    28,223.65/38,948.07 = 16,286.68/x
  3. Step 3: Cross multiply
    28,223.65x = 38,948.07 × 16,286.68
  4. Step 4: Simplify right side
    28,223.65x = 634,334,752.71
  5. Step 5: Solve for x
    x = 634,334,752.71/28,223.65
  6. Step 6: Final answer
    x = 22,475.29

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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.