Home / 21,818.40-32,719.32-9,330.60

Finding the Fourth Proportional to 21,818.40, 32,719.32 and 9,330.60

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Solution

The fourth proportional to 21,818.40, 32,719.32 and 9,330.60 is: 13,992.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,818.40 : 32,719.32 = 9,330.60 : x
  2. Step 2: Convert to fraction form
    21,818.40/32,719.32 = 9,330.60/x
  3. Step 3: Cross multiply
    21,818.40x = 32,719.32 × 9,330.60
  4. Step 4: Simplify right side
    21,818.40x = 305,290,887.19
  5. Step 5: Solve for x
    x = 305,290,887.19/21,818.40
  6. Step 6: Final answer
    x = 13,992.36

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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.