Home / 20,109.06-30,132.82-10,750.40

Finding the Fourth Proportional to 20,109.06, 30,132.82 and 10,750.40

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Solution

The fourth proportional to 20,109.06, 30,132.82 and 10,750.40 is: 16,109.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,109.06 : 30,132.82 = 10,750.40 : x
  2. Step 2: Convert to fraction form
    20,109.06/30,132.82 = 10,750.40/x
  3. Step 3: Cross multiply
    20,109.06x = 30,132.82 × 10,750.40
  4. Step 4: Simplify right side
    20,109.06x = 323,939,868.13
  5. Step 5: Solve for x
    x = 323,939,868.13/20,109.06
  6. Step 6: Final answer
    x = 16,109.15

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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.