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Finding the Fourth Proportional to 17,615.70, 26,401.15 and 7,215.70

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Solution

The fourth proportional to 17,615.70, 26,401.15 and 7,215.70 is: 10,814.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    17,615.70 : 26,401.15 = 7,215.70 : x
  2. Step 2: Convert to fraction form
    17,615.70/26,401.15 = 7,215.70/x
  3. Step 3: Cross multiply
    17,615.70x = 26,401.15 × 7,215.70
  4. Step 4: Simplify right side
    17,615.70x = 190,502,778.06
  5. Step 5: Solve for x
    x = 190,502,778.06/17,615.70
  6. Step 6: Final answer
    x = 10,814.37

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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.