Home / 20,701.46-31,035.78-19,290.84

Finding the Fourth Proportional to 20,701.46, 31,035.78 and 19,290.84

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Solution

The fourth proportional to 20,701.46, 31,035.78 and 19,290.84 is: 28,920.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,701.46 : 31,035.78 = 19,290.84 : x
  2. Step 2: Convert to fraction form
    20,701.46/31,035.78 = 19,290.84/x
  3. Step 3: Cross multiply
    20,701.46x = 31,035.78 × 19,290.84
  4. Step 4: Simplify right side
    20,701.46x = 598,706,266.26
  5. Step 5: Solve for x
    x = 598,706,266.26/20,701.46
  6. Step 6: Final answer
    x = 28,920.98

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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.