Home / 21,004.92-31,504.14-9,316.08

Finding the Fourth Proportional to 21,004.92, 31,504.14 and 9,316.08

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Solution

The fourth proportional to 21,004.92, 31,504.14 and 9,316.08 is: 13,972.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,004.92 : 31,504.14 = 9,316.08 : x
  2. Step 2: Convert to fraction form
    21,004.92/31,504.14 = 9,316.08/x
  3. Step 3: Cross multiply
    21,004.92x = 31,504.14 × 9,316.08
  4. Step 4: Simplify right side
    21,004.92x = 293,495,088.57
  5. Step 5: Solve for x
    x = 293,495,088.57/21,004.92
  6. Step 6: Final answer
    x = 13,972.68

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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.