Home / 21,338.93-31,990.31-8,851.16

Finding the Fourth Proportional to 21,338.93, 31,990.31 and 8,851.16

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Solution

The fourth proportional to 21,338.93, 31,990.31 and 8,851.16 is: 13,269.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,338.93 : 31,990.31 = 8,851.16 : x
  2. Step 2: Convert to fraction form
    21,338.93/31,990.31 = 8,851.16/x
  3. Step 3: Cross multiply
    21,338.93x = 31,990.31 × 8,851.16
  4. Step 4: Simplify right side
    21,338.93x = 283,151,291.01
  5. Step 5: Solve for x
    x = 283,151,291.01/21,338.93
  6. Step 6: Final answer
    x = 13,269.24

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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.