Home / 20,869.84-31,304.81-6,079.12

Finding the Fourth Proportional to 20,869.84, 31,304.81 and 6,079.12

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Solution

The fourth proportional to 20,869.84, 31,304.81 and 6,079.12 is: 9,118.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,869.84 : 31,304.81 = 6,079.12 : x
  2. Step 2: Convert to fraction form
    20,869.84/31,304.81 = 6,079.12/x
  3. Step 3: Cross multiply
    20,869.84x = 31,304.81 × 6,079.12
  4. Step 4: Simplify right side
    20,869.84x = 190,305,633.50
  5. Step 5: Solve for x
    x = 190,305,633.50/20,869.84
  6. Step 6: Final answer
    x = 9,118.69

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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.