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Finding the Fourth Proportional to 28,110.69, 38,792.79 and 16,173.79

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Solution

The fourth proportional to 28,110.69, 38,792.79 and 16,173.79 is: 22,319.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,110.69 : 38,792.79 = 16,173.79 : x
  2. Step 2: Convert to fraction form
    28,110.69/38,792.79 = 16,173.79/x
  3. Step 3: Cross multiply
    28,110.69x = 38,792.79 × 16,173.79
  4. Step 4: Simplify right side
    28,110.69x = 627,426,341.99
  5. Step 5: Solve for x
    x = 627,426,341.99/28,110.69
  6. Step 6: Final answer
    x = 22,319.85

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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.