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Finding the Fourth Proportional to 17,615.18, 26,431.89 and 7,762.75

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Solution

The fourth proportional to 17,615.18, 26,431.89 and 7,762.75 is: 11,648.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    17,615.18 : 26,431.89 = 7,762.75 : x
  2. Step 2: Convert to fraction form
    17,615.18/26,431.89 = 7,762.75/x
  3. Step 3: Cross multiply
    17,615.18x = 26,431.89 × 7,762.75
  4. Step 4: Simplify right side
    17,615.18x = 205,184,058.91
  5. Step 5: Solve for x
    x = 205,184,058.91/17,615.18
  6. Step 6: Final answer
    x = 11,648.14

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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.