Home / 12,310.88-18,442.32-11,681.12

Finding the Fourth Proportional to 12,310.88, 18,442.32 and 11,681.12

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Solution

The fourth proportional to 12,310.88, 18,442.32 and 11,681.12 is: 17,498.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,310.88 : 18,442.32 = 11,681.12 : x
  2. Step 2: Convert to fraction form
    12,310.88/18,442.32 = 11,681.12/x
  3. Step 3: Cross multiply
    12,310.88x = 18,442.32 × 11,681.12
  4. Step 4: Simplify right side
    12,310.88x = 215,426,953.00
  5. Step 5: Solve for x
    x = 215,426,953.00/12,310.88
  6. Step 6: Final answer
    x = 17,498.91

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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.