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Finding the Fourth Proportional to 16,959.13, 23,403.87 and 9,405.77

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Solution

The fourth proportional to 16,959.13, 23,403.87 and 9,405.77 is: 12,980.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    16,959.13 : 23,403.87 = 9,405.77 : x
  2. Step 2: Convert to fraction form
    16,959.13/23,403.87 = 9,405.77/x
  3. Step 3: Cross multiply
    16,959.13x = 23,403.87 × 9,405.77
  4. Step 4: Simplify right side
    16,959.13x = 220,131,418.33
  5. Step 5: Solve for x
    x = 220,131,418.33/16,959.13
  6. Step 6: Final answer
    x = 12,980.11

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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.