Home / 20,934.08-31,403.28-6,142.94

Finding the Fourth Proportional to 20,934.08, 31,403.28 and 6,142.94

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Solution

The fourth proportional to 20,934.08, 31,403.28 and 6,142.94 is: 9,215.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,934.08 : 31,403.28 = 6,142.94 : x
  2. Step 2: Convert to fraction form
    20,934.08/31,403.28 = 6,142.94/x
  3. Step 3: Cross multiply
    20,934.08x = 31,403.28 × 6,142.94
  4. Step 4: Simplify right side
    20,934.08x = 192,908,464.84
  5. Step 5: Solve for x
    x = 192,908,464.84/20,934.08
  6. Step 6: Final answer
    x = 9,215.04

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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.