Home / 38,688.48-58,049.10-21,137.82

Finding the Fourth Proportional to 38,688.48, 58,049.10 and 21,137.82

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Solution

The fourth proportional to 38,688.48, 58,049.10 and 21,137.82 is: 31,715.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,688.48 : 58,049.10 = 21,137.82 : x
  2. Step 2: Convert to fraction form
    38,688.48/58,049.10 = 21,137.82/x
  3. Step 3: Cross multiply
    38,688.48x = 58,049.10 × 21,137.82
  4. Step 4: Simplify right side
    38,688.48x = 1,227,031,426.96
  5. Step 5: Solve for x
    x = 1,227,031,426.96/38,688.48
  6. Step 6: Final answer
    x = 31,715.68

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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.