Home / 21,130.48-31,694.64-6,339.52

Finding the Fourth Proportional to 21,130.48, 31,694.64 and 6,339.52

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Solution

The fourth proportional to 21,130.48, 31,694.64 and 6,339.52 is: 9,508.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,130.48 : 31,694.64 = 6,339.52 : x
  2. Step 2: Convert to fraction form
    21,130.48/31,694.64 = 6,339.52/x
  3. Step 3: Cross multiply
    21,130.48x = 31,694.64 × 6,339.52
  4. Step 4: Simplify right side
    21,130.48x = 200,928,804.17
  5. Step 5: Solve for x
    x = 200,928,804.17/21,130.48
  6. Step 6: Final answer
    x = 9,508.96

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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.