Home / 38,611.04-57,920.88-12,309.68

Finding the Fourth Proportional to 38,611.04, 57,920.88 and 12,309.68

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Solution

The fourth proportional to 38,611.04, 57,920.88 and 12,309.68 is: 18,465.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,611.04 : 57,920.88 = 12,309.68 : x
  2. Step 2: Convert to fraction form
    38,611.04/57,920.88 = 12,309.68/x
  3. Step 3: Cross multiply
    38,611.04x = 57,920.88 × 12,309.68
  4. Step 4: Simplify right side
    38,611.04x = 712,987,498.12
  5. Step 5: Solve for x
    x = 712,987,498.12/38,611.04
  6. Step 6: Final answer
    x = 18,465.90

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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.