Home / 21,955.09-32,938.81-8,816.69

Finding the Fourth Proportional to 21,955.09, 32,938.81 and 8,816.69

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Solution

The fourth proportional to 21,955.09, 32,938.81 and 8,816.69 is: 13,227.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,955.09 : 32,938.81 = 8,816.69 : x
  2. Step 2: Convert to fraction form
    21,955.09/32,938.81 = 8,816.69/x
  3. Step 3: Cross multiply
    21,955.09x = 32,938.81 × 8,816.69
  4. Step 4: Simplify right side
    21,955.09x = 290,411,232.66
  5. Step 5: Solve for x
    x = 290,411,232.66/21,955.09
  6. Step 6: Final answer
    x = 13,227.51

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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.