Home / 21,438.36-32,151.60-6,442.02

Finding the Fourth Proportional to 21,438.36, 32,151.60 and 6,442.02

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Solution

The fourth proportional to 21,438.36, 32,151.60 and 6,442.02 is: 9,661.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,438.36 : 32,151.60 = 6,442.02 : x
  2. Step 2: Convert to fraction form
    21,438.36/32,151.60 = 6,442.02/x
  3. Step 3: Cross multiply
    21,438.36x = 32,151.60 × 6,442.02
  4. Step 4: Simplify right side
    21,438.36x = 207,121,250.23
  5. Step 5: Solve for x
    x = 207,121,250.23/21,438.36
  6. Step 6: Final answer
    x = 9,661.25

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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.