Home / 20,215.12-30,308.91-10,346.35

Finding the Fourth Proportional to 20,215.12, 30,308.91 and 10,346.35

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Solution

The fourth proportional to 20,215.12, 30,308.91 and 10,346.35 is: 15,512.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,215.12 : 30,308.91 = 10,346.35 : x
  2. Step 2: Convert to fraction form
    20,215.12/30,308.91 = 10,346.35/x
  3. Step 3: Cross multiply
    20,215.12x = 30,308.91 × 10,346.35
  4. Step 4: Simplify right side
    20,215.12x = 313,586,590.98
  5. Step 5: Solve for x
    x = 313,586,590.98/20,215.12
  6. Step 6: Final answer
    x = 15,512.48

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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.