Home / 21,101.39-31,647.36-6,308.39

Finding the Fourth Proportional to 21,101.39, 31,647.36 and 6,308.39

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Solution

The fourth proportional to 21,101.39, 31,647.36 and 6,308.39 is: 9,461.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,101.39 : 31,647.36 = 6,308.39 : x
  2. Step 2: Convert to fraction form
    21,101.39/31,647.36 = 6,308.39/x
  3. Step 3: Cross multiply
    21,101.39x = 31,647.36 × 6,308.39
  4. Step 4: Simplify right side
    21,101.39x = 199,643,731.11
  5. Step 5: Solve for x
    x = 199,643,731.11/21,101.39
  6. Step 6: Final answer
    x = 9,461.17

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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.