Home / 21,316.40-31,974.60-6,525.35

Finding the Fourth Proportional to 21,316.40, 31,974.60 and 6,525.35

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Solution

The fourth proportional to 21,316.40, 31,974.60 and 6,525.35 is: 9,788.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,316.40 : 31,974.60 = 6,525.35 : x
  2. Step 2: Convert to fraction form
    21,316.40/31,974.60 = 6,525.35/x
  3. Step 3: Cross multiply
    21,316.40x = 31,974.60 × 6,525.35
  4. Step 4: Simplify right side
    21,316.40x = 208,645,456.11
  5. Step 5: Solve for x
    x = 208,645,456.11/21,316.40
  6. Step 6: Final answer
    x = 9,788.03

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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.