Home / 21,960.08-30,309.89-17,170.55

Finding the Fourth Proportional to 21,960.08, 30,309.89 and 17,170.55

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Solution

The fourth proportional to 21,960.08, 30,309.89 and 17,170.55 is: 23,699.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,960.08 : 30,309.89 = 17,170.55 : x
  2. Step 2: Convert to fraction form
    21,960.08/30,309.89 = 17,170.55/x
  3. Step 3: Cross multiply
    21,960.08x = 30,309.89 × 17,170.55
  4. Step 4: Simplify right side
    21,960.08x = 520,437,244.34
  5. Step 5: Solve for x
    x = 520,437,244.34/21,960.08
  6. Step 6: Final answer
    x = 23,699.25

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.