Home / 20,119.90-30,166.06-10,240.06

Finding the Fourth Proportional to 20,119.90, 30,166.06 and 10,240.06

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Solution

The fourth proportional to 20,119.90, 30,166.06 and 10,240.06 is: 15,353.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,119.90 : 30,166.06 = 10,240.06 : x
  2. Step 2: Convert to fraction form
    20,119.90/30,166.06 = 10,240.06/x
  3. Step 3: Cross multiply
    20,119.90x = 30,166.06 × 10,240.06
  4. Step 4: Simplify right side
    20,119.90x = 308,902,264.36
  5. Step 5: Solve for x
    x = 308,902,264.36/20,119.90
  6. Step 6: Final answer
    x = 15,353.07

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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.