Home / 28,479.12-39,290.04-16,540.32

Finding the Fourth Proportional to 28,479.12, 39,290.04 and 16,540.32

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Solution

The fourth proportional to 28,479.12, 39,290.04 and 16,540.32 is: 22,819.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,479.12 : 39,290.04 = 16,540.32 : x
  2. Step 2: Convert to fraction form
    28,479.12/39,290.04 = 16,540.32/x
  3. Step 3: Cross multiply
    28,479.12x = 39,290.04 × 16,540.32
  4. Step 4: Simplify right side
    28,479.12x = 649,869,834.41
  5. Step 5: Solve for x
    x = 649,869,834.41/28,479.12
  6. Step 6: Final answer
    x = 22,819.17

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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.