Home / 21,165.18-31,748.44-7,841.51

Finding the Fourth Proportional to 21,165.18, 31,748.44 and 7,841.51

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Solution

The fourth proportional to 21,165.18, 31,748.44 and 7,841.51 is: 11,762.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,165.18 : 31,748.44 = 7,841.51 : x
  2. Step 2: Convert to fraction form
    21,165.18/31,748.44 = 7,841.51/x
  3. Step 3: Cross multiply
    21,165.18x = 31,748.44 × 7,841.51
  4. Step 4: Simplify right side
    21,165.18x = 248,955,610.77
  5. Step 5: Solve for x
    x = 248,955,610.77/21,165.18
  6. Step 6: Final answer
    x = 11,762.51

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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.