Home / 21,227.88-31,656.51-18,607.52

Finding the Fourth Proportional to 21,227.88, 31,656.51 and 18,607.52

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Solution

The fourth proportional to 21,227.88, 31,656.51 and 18,607.52 is: 27,748.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,227.88 : 31,656.51 = 18,607.52 : x
  2. Step 2: Convert to fraction form
    21,227.88/31,656.51 = 18,607.52/x
  3. Step 3: Cross multiply
    21,227.88x = 31,656.51 × 18,607.52
  4. Step 4: Simplify right side
    21,227.88x = 589,049,049.92
  5. Step 5: Solve for x
    x = 589,049,049.92/21,227.88
  6. Step 6: Final answer
    x = 27,748.84

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.