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Finding the Fourth Proportional to 20,259.99, 30,334.10 and 10,377.99

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Solution

The fourth proportional to 20,259.99, 30,334.10 and 10,377.99 is: 15,538.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,259.99 : 30,334.10 = 10,377.99 : x
  2. Step 2: Convert to fraction form
    20,259.99/30,334.10 = 10,377.99/x
  3. Step 3: Cross multiply
    20,259.99x = 30,334.10 × 10,377.99
  4. Step 4: Simplify right side
    20,259.99x = 314,806,934.57
  5. Step 5: Solve for x
    x = 314,806,934.57/20,259.99
  6. Step 6: Final answer
    x = 15,538.36

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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.