Home / 11,918.73-16,421.31-8,726.61

Finding the Fourth Proportional to 11,918.73, 16,421.31 and 8,726.61

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Solution

The fourth proportional to 11,918.73, 16,421.31 and 8,726.61 is: 12,023.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,918.73 : 16,421.31 = 8,726.61 : x
  2. Step 2: Convert to fraction form
    11,918.73/16,421.31 = 8,726.61/x
  3. Step 3: Cross multiply
    11,918.73x = 16,421.31 × 8,726.61
  4. Step 4: Simplify right side
    11,918.73x = 143,302,368.06
  5. Step 5: Solve for x
    x = 143,302,368.06/11,918.73
  6. Step 6: Final answer
    x = 12,023.29

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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.