Home / 20,332.83-28,061.07-11,380.21

Finding the Fourth Proportional to 20,332.83, 28,061.07 and 11,380.21

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Solution

The fourth proportional to 20,332.83, 28,061.07 and 11,380.21 is: 15,705.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,332.83 : 28,061.07 = 11,380.21 : x
  2. Step 2: Convert to fraction form
    20,332.83/28,061.07 = 11,380.21/x
  3. Step 3: Cross multiply
    20,332.83x = 28,061.07 × 11,380.21
  4. Step 4: Simplify right side
    20,332.83x = 319,340,756.60
  5. Step 5: Solve for x
    x = 319,340,756.60/20,332.83
  6. Step 6: Final answer
    x = 15,705.67

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.