Home / 21,810.85-32,721.91-9,153.81

Finding the Fourth Proportional to 21,810.85, 32,721.91 and 9,153.81

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Solution

The fourth proportional to 21,810.85, 32,721.91 and 9,153.81 is: 13,733.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,810.85 : 32,721.91 = 9,153.81 : x
  2. Step 2: Convert to fraction form
    21,810.85/32,721.91 = 9,153.81/x
  3. Step 3: Cross multiply
    21,810.85x = 32,721.91 × 9,153.81
  4. Step 4: Simplify right side
    21,810.85x = 299,530,124.09
  5. Step 5: Solve for x
    x = 299,530,124.09/21,810.85
  6. Step 6: Final answer
    x = 13,733.08

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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.