Home / 16,689.36-23,031.11-9,135.66

Finding the Fourth Proportional to 16,689.36, 23,031.11 and 9,135.66

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Solution

The fourth proportional to 16,689.36, 23,031.11 and 9,135.66 is: 12,607.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    16,689.36 : 23,031.11 = 9,135.66 : x
  2. Step 2: Convert to fraction form
    16,689.36/23,031.11 = 9,135.66/x
  3. Step 3: Cross multiply
    16,689.36x = 23,031.11 × 9,135.66
  4. Step 4: Simplify right side
    16,689.36x = 210,404,390.38
  5. Step 5: Solve for x
    x = 210,404,390.38/16,689.36
  6. Step 6: Final answer
    x = 12,607.10

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Double scale
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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.