Home / 20,419.04-30,614.16-7,928.66

Finding the Fourth Proportional to 20,419.04, 30,614.16 and 7,928.66

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Solution

The fourth proportional to 20,419.04, 30,614.16 and 7,928.66 is: 11,887.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,419.04 : 30,614.16 = 7,928.66 : x
  2. Step 2: Convert to fraction form
    20,419.04/30,614.16 = 7,928.66/x
  3. Step 3: Cross multiply
    20,419.04x = 30,614.16 × 7,928.66
  4. Step 4: Simplify right side
    20,419.04x = 242,729,372.09
  5. Step 5: Solve for x
    x = 242,729,372.09/20,419.04
  6. Step 6: Final answer
    x = 11,887.40

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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.