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Finding the Fourth Proportional to 28,030.69, 38,660.49 and 17,960.10

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Solution

The fourth proportional to 28,030.69, 38,660.49 and 17,960.10 is: 24,770.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,030.69 : 38,660.49 = 17,960.10 : x
  2. Step 2: Convert to fraction form
    28,030.69/38,660.49 = 17,960.10/x
  3. Step 3: Cross multiply
    28,030.69x = 38,660.49 × 17,960.10
  4. Step 4: Simplify right side
    28,030.69x = 694,346,121.47
  5. Step 5: Solve for x
    x = 694,346,121.47/28,030.69
  6. Step 6: Final answer
    x = 24,770.92

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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.