Home / 34,136.20-47,109.78-19,990.12

Finding the Fourth Proportional to 34,136.20, 47,109.78 and 19,990.12

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Solution

The fourth proportional to 34,136.20, 47,109.78 and 19,990.12 is: 27,587.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    34,136.20 : 47,109.78 = 19,990.12 : x
  2. Step 2: Convert to fraction form
    34,136.20/47,109.78 = 19,990.12/x
  3. Step 3: Cross multiply
    34,136.20x = 47,109.78 × 19,990.12
  4. Step 4: Simplify right side
    34,136.20x = 941,730,155.37
  5. Step 5: Solve for x
    x = 941,730,155.37/34,136.20
  6. Step 6: Final answer
    x = 27,587.43

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.