Home / 20,387.70-30,567.78-7,057.26

Finding the Fourth Proportional to 20,387.70, 30,567.78 and 7,057.26

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Solution

The fourth proportional to 20,387.70, 30,567.78 and 7,057.26 is: 10,581.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,387.70 : 30,567.78 = 7,057.26 : x
  2. Step 2: Convert to fraction form
    20,387.70/30,567.78 = 7,057.26/x
  3. Step 3: Cross multiply
    20,387.70x = 30,567.78 × 7,057.26
  4. Step 4: Simplify right side
    20,387.70x = 215,724,771.08
  5. Step 5: Solve for x
    x = 215,724,771.08/20,387.70
  6. Step 6: Final answer
    x = 10,581.12

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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.