Home / 21,915.81-32,892.09-11,392.29

Finding the Fourth Proportional to 21,915.81, 32,892.09 and 11,392.29

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Solution

The fourth proportional to 21,915.81, 32,892.09 and 11,392.29 is: 17,097.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,915.81 : 32,892.09 = 11,392.29 : x
  2. Step 2: Convert to fraction form
    21,915.81/32,892.09 = 11,392.29/x
  3. Step 3: Cross multiply
    21,915.81x = 32,892.09 × 11,392.29
  4. Step 4: Simplify right side
    21,915.81x = 374,716,227.99
  5. Step 5: Solve for x
    x = 374,716,227.99/21,915.81
  6. Step 6: Final answer
    x = 17,097.99

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1.5x scale

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.