Home / 20,859.12-31,239.27-16,447.05

Finding the Fourth Proportional to 20,859.12, 31,239.27 and 16,447.05

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Solution

The fourth proportional to 20,859.12, 31,239.27 and 16,447.05 is: 24,631.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,859.12 : 31,239.27 = 16,447.05 : x
  2. Step 2: Convert to fraction form
    20,859.12/31,239.27 = 16,447.05/x
  3. Step 3: Cross multiply
    20,859.12x = 31,239.27 × 16,447.05
  4. Step 4: Simplify right side
    20,859.12x = 513,793,835.65
  5. Step 5: Solve for x
    x = 513,793,835.65/20,859.12
  6. Step 6: Final answer
    x = 24,631.62

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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.