Home / 21,058.83-31,565.55-11,188.17

Finding the Fourth Proportional to 21,058.83, 31,565.55 and 11,188.17

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Solution

The fourth proportional to 21,058.83, 31,565.55 and 11,188.17 is: 16,770.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,058.83 : 31,565.55 = 11,188.17 : x
  2. Step 2: Convert to fraction form
    21,058.83/31,565.55 = 11,188.17/x
  3. Step 3: Cross multiply
    21,058.83x = 31,565.55 × 11,188.17
  4. Step 4: Simplify right side
    21,058.83x = 353,160,739.54
  5. Step 5: Solve for x
    x = 353,160,739.54/21,058.83
  6. Step 6: Final answer
    x = 16,770.20

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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.