Home / 21,058.58-31,565.17-11,187.92

Finding the Fourth Proportional to 21,058.58, 31,565.17 and 11,187.92

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Solution

The fourth proportional to 21,058.58, 31,565.17 and 11,187.92 is: 16,769.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,058.58 : 31,565.17 = 11,187.92 : x
  2. Step 2: Convert to fraction form
    21,058.58/31,565.17 = 11,187.92/x
  3. Step 3: Cross multiply
    21,058.58x = 31,565.17 × 11,187.92
  4. Step 4: Simplify right side
    21,058.58x = 353,148,596.75
  5. Step 5: Solve for x
    x = 353,148,596.75/21,058.58
  6. Step 6: Final answer
    x = 16,769.82

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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.