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Finding the Fourth Proportional to 28,176.56, 38,883 and 16,239.14

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Solution

The fourth proportional to 28,176.56, 38,883 and 16,239.14 is: 22,409.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,176.56 : 38,883 = 16,239.14 : x
  2. Step 2: Convert to fraction form
    28,176.56/38,883 = 16,239.14/x
  3. Step 3: Cross multiply
    28,176.56x = 38,883 × 16,239.14
  4. Step 4: Simplify right side
    28,176.56x = 631,426,480.62
  5. Step 5: Solve for x
    x = 631,426,480.62/28,176.56
  6. Step 6: Final answer
    x = 22,409.64

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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.