Home / 20,109.13-30,159.10-7,630.54

Finding the Fourth Proportional to 20,109.13, 30,159.10 and 7,630.54

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Solution

The fourth proportional to 20,109.13, 30,159.10 and 7,630.54 is: 11,444.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,109.13 : 30,159.10 = 7,630.54 : x
  2. Step 2: Convert to fraction form
    20,109.13/30,159.10 = 7,630.54/x
  3. Step 3: Cross multiply
    20,109.13x = 30,159.10 × 7,630.54
  4. Step 4: Simplify right side
    20,109.13x = 230,130,218.91
  5. Step 5: Solve for x
    x = 230,130,218.91/20,109.13
  6. Step 6: Final answer
    x = 11,444.07

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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.