Home / 20,220.03-30,330.05-11,436.80

Finding the Fourth Proportional to 20,220.03, 30,330.05 and 11,436.80

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Solution

The fourth proportional to 20,220.03, 30,330.05 and 11,436.80 is: 17,155.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,220.03 : 30,330.05 = 11,436.80 : x
  2. Step 2: Convert to fraction form
    20,220.03/30,330.05 = 11,436.80/x
  3. Step 3: Cross multiply
    20,220.03x = 30,330.05 × 11,436.80
  4. Step 4: Simplify right side
    20,220.03x = 346,878,507.01
  5. Step 5: Solve for x
    x = 346,878,507.01/20,220.03
  6. Step 6: Final answer
    x = 17,155.19

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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.