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Finding the Fourth Proportional to 17,412.54, 26,118.90 and 8,645.40

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Solution

The fourth proportional to 17,412.54, 26,118.90 and 8,645.40 is: 12,968.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    17,412.54 : 26,118.90 = 8,645.40 : x
  2. Step 2: Convert to fraction form
    17,412.54/26,118.90 = 8,645.40/x
  3. Step 3: Cross multiply
    17,412.54x = 26,118.90 × 8,645.40
  4. Step 4: Simplify right side
    17,412.54x = 225,808,338.06
  5. Step 5: Solve for x
    x = 225,808,338.06/17,412.54
  6. Step 6: Final answer
    x = 12,968.14

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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.