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Finding the Fourth Proportional to 17,478.56, 26,217.78 and 7,090.28

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Solution

The fourth proportional to 17,478.56, 26,217.78 and 7,090.28 is: 10,635.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    17,478.56 : 26,217.78 = 7,090.28 : x
  2. Step 2: Convert to fraction form
    17,478.56/26,217.78 = 7,090.28/x
  3. Step 3: Cross multiply
    17,478.56x = 26,217.78 × 7,090.28
  4. Step 4: Simplify right side
    17,478.56x = 185,891,401.18
  5. Step 5: Solve for x
    x = 185,891,401.18/17,478.56
  6. Step 6: Final answer
    x = 10,635.40

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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.