Home / 20,085.18-30,131.12-6,934.02

Finding the Fourth Proportional to 20,085.18, 30,131.12 and 6,934.02

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Solution

The fourth proportional to 20,085.18, 30,131.12 and 6,934.02 is: 10,402.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,085.18 : 30,131.12 = 6,934.02 : x
  2. Step 2: Convert to fraction form
    20,085.18/30,131.12 = 6,934.02/x
  3. Step 3: Cross multiply
    20,085.18x = 30,131.12 × 6,934.02
  4. Step 4: Simplify right side
    20,085.18x = 208,929,788.70
  5. Step 5: Solve for x
    x = 208,929,788.70/20,085.18
  6. Step 6: Final answer
    x = 10,402.19

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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.