Home / 20,360.51-28,094.90-11,405.81

Finding the Fourth Proportional to 20,360.51, 28,094.90 and 11,405.81

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Solution

The fourth proportional to 20,360.51, 28,094.90 and 11,405.81 is: 15,738.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,360.51 : 28,094.90 = 11,405.81 : x
  2. Step 2: Convert to fraction form
    20,360.51/28,094.90 = 11,405.81/x
  3. Step 3: Cross multiply
    20,360.51x = 28,094.90 × 11,405.81
  4. Step 4: Simplify right side
    20,360.51x = 320,445,168.73
  5. Step 5: Solve for x
    x = 320,445,168.73/20,360.51
  6. Step 6: Final answer
    x = 15,738.56

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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.