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Finding the Fourth Proportional to 17,561.79, 26,303.13 and 12,320.15

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Solution

The fourth proportional to 17,561.79, 26,303.13 and 12,320.15 is: 18,452.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    17,561.79 : 26,303.13 = 12,320.15 : x
  2. Step 2: Convert to fraction form
    17,561.79/26,303.13 = 12,320.15/x
  3. Step 3: Cross multiply
    17,561.79x = 26,303.13 × 12,320.15
  4. Step 4: Simplify right side
    17,561.79x = 324,058,375.55
  5. Step 5: Solve for x
    x = 324,058,375.55/17,561.79
  6. Step 6: Final answer
    x = 18,452.47

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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.