Home / 20,291.55-30,436.79-9,190.23

Finding the Fourth Proportional to 20,291.55, 30,436.79 and 9,190.23

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Solution

The fourth proportional to 20,291.55, 30,436.79 and 9,190.23 is: 13,785.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,291.55 : 30,436.79 = 9,190.23 : x
  2. Step 2: Convert to fraction form
    20,291.55/30,436.79 = 9,190.23/x
  3. Step 3: Cross multiply
    20,291.55x = 30,436.79 × 9,190.23
  4. Step 4: Simplify right side
    20,291.55x = 279,721,054.61
  5. Step 5: Solve for x
    x = 279,721,054.61/20,291.55
  6. Step 6: Final answer
    x = 13,785.10

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Double scale
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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.