Home / 21,442.86-32,213.73-20,557.14

Finding the Fourth Proportional to 21,442.86, 32,213.73 and 20,557.14

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Solution

The fourth proportional to 21,442.86, 32,213.73 and 20,557.14 is: 30,883.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,442.86 : 32,213.73 = 20,557.14 : x
  2. Step 2: Convert to fraction form
    21,442.86/32,213.73 = 20,557.14/x
  3. Step 3: Cross multiply
    21,442.86x = 32,213.73 × 20,557.14
  4. Step 4: Simplify right side
    21,442.86x = 662,222,157.53
  5. Step 5: Solve for x
    x = 662,222,157.53/21,442.86
  6. Step 6: Final answer
    x = 30,883.11

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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.