Home / 21,909.24-32,840.16-8,747.14

Finding the Fourth Proportional to 21,909.24, 32,840.16 and 8,747.14

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Solution

The fourth proportional to 21,909.24, 32,840.16 and 8,747.14 is: 13,111.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,909.24 : 32,840.16 = 8,747.14 : x
  2. Step 2: Convert to fraction form
    21,909.24/32,840.16 = 8,747.14/x
  3. Step 3: Cross multiply
    21,909.24x = 32,840.16 × 8,747.14
  4. Step 4: Simplify right side
    21,909.24x = 287,257,477.14
  5. Step 5: Solve for x
    x = 287,257,477.14/21,909.24
  6. Step 6: Final answer
    x = 13,111.25

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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.