Home / 20,167.57-30,247.35-19,167.40

Finding the Fourth Proportional to 20,167.57, 30,247.35 and 19,167.40

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Solution

The fourth proportional to 20,167.57, 30,247.35 and 19,167.40 is: 28,747.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,167.57 : 30,247.35 = 19,167.40 : x
  2. Step 2: Convert to fraction form
    20,167.57/30,247.35 = 19,167.40/x
  3. Step 3: Cross multiply
    20,167.57x = 30,247.35 × 19,167.40
  4. Step 4: Simplify right side
    20,167.57x = 579,763,056.39
  5. Step 5: Solve for x
    x = 579,763,056.39/20,167.57
  6. Step 6: Final answer
    x = 28,747.29

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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.