Home / 20,190.72-30,270.96-13,598.40

Finding the Fourth Proportional to 20,190.72, 30,270.96 and 13,598.40

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Solution

The fourth proportional to 20,190.72, 30,270.96 and 13,598.40 is: 20,387.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,190.72 : 30,270.96 = 13,598.40 : x
  2. Step 2: Convert to fraction form
    20,190.72/30,270.96 = 13,598.40/x
  3. Step 3: Cross multiply
    20,190.72x = 30,270.96 × 13,598.40
  4. Step 4: Simplify right side
    20,190.72x = 411,636,622.46
  5. Step 5: Solve for x
    x = 411,636,622.46/20,190.72
  6. Step 6: Final answer
    x = 20,387.42

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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.