Home / 21,225.16-31,836.12-8,741.98

Finding the Fourth Proportional to 21,225.16, 31,836.12 and 8,741.98

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Solution

The fourth proportional to 21,225.16, 31,836.12 and 8,741.98 is: 13,112.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,225.16 : 31,836.12 = 8,741.98 : x
  2. Step 2: Convert to fraction form
    21,225.16/31,836.12 = 8,741.98/x
  3. Step 3: Cross multiply
    21,225.16x = 31,836.12 × 8,741.98
  4. Step 4: Simplify right side
    21,225.16x = 278,310,724.32
  5. Step 5: Solve for x
    x = 278,310,724.32/21,225.16
  6. Step 6: Final answer
    x = 13,112.30

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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.