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Finding the Fourth Proportional to 22,750.47, 31,410.18 and 21,645.63

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Solution

The fourth proportional to 22,750.47, 31,410.18 and 21,645.63 is: 29,884.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,750.47 : 31,410.18 = 21,645.63 : x
  2. Step 2: Convert to fraction form
    22,750.47/31,410.18 = 21,645.63/x
  3. Step 3: Cross multiply
    22,750.47x = 31,410.18 × 21,645.63
  4. Step 4: Simplify right side
    22,750.47x = 679,893,134.51
  5. Step 5: Solve for x
    x = 679,893,134.51/22,750.47
  6. Step 6: Final answer
    x = 29,884.80

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.