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Finding the Fourth Proportional to 17,689.92, 26,530.90 and 5,210.80

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Solution

The fourth proportional to 17,689.92, 26,530.90 and 5,210.80 is: 7,815.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    17,689.92 : 26,530.90 = 5,210.80 : x
  2. Step 2: Convert to fraction form
    17,689.92/26,530.90 = 5,210.80/x
  3. Step 3: Cross multiply
    17,689.92x = 26,530.90 × 5,210.80
  4. Step 4: Simplify right side
    17,689.92x = 138,247,213.72
  5. Step 5: Solve for x
    x = 138,247,213.72/17,689.92
  6. Step 6: Final answer
    x = 7,815.03

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.