Home / 20,686.04-28,546.85-11,254.67

Finding the Fourth Proportional to 20,686.04, 28,546.85 and 11,254.67

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Solution

The fourth proportional to 20,686.04, 28,546.85 and 11,254.67 is: 15,531.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,686.04 : 28,546.85 = 11,254.67 : x
  2. Step 2: Convert to fraction form
    20,686.04/28,546.85 = 11,254.67/x
  3. Step 3: Cross multiply
    20,686.04x = 28,546.85 × 11,254.67
  4. Step 4: Simplify right side
    20,686.04x = 321,285,261.69
  5. Step 5: Solve for x
    x = 321,285,261.69/20,686.04
  6. Step 6: Final answer
    x = 15,531.51

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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.