Home / 21,081.60-31,587.84-16,450.56

Finding the Fourth Proportional to 21,081.60, 31,587.84 and 16,450.56

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Solution

The fourth proportional to 21,081.60, 31,587.84 and 16,450.56 is: 24,648.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,081.60 : 31,587.84 = 16,450.56 : x
  2. Step 2: Convert to fraction form
    21,081.60/31,587.84 = 16,450.56/x
  3. Step 3: Cross multiply
    21,081.60x = 31,587.84 × 16,450.56
  4. Step 4: Simplify right side
    21,081.60x = 519,637,657.19
  5. Step 5: Solve for x
    x = 519,637,657.19/21,081.60
  6. Step 6: Final answer
    x = 24,648.87

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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.