Home / 21,160.06-31,677.78-15,638.02

Finding the Fourth Proportional to 21,160.06, 31,677.78 and 15,638.02

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Solution

The fourth proportional to 21,160.06, 31,677.78 and 15,638.02 is: 23,410.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,160.06 : 31,677.78 = 15,638.02 : x
  2. Step 2: Convert to fraction form
    21,160.06/31,677.78 = 15,638.02/x
  3. Step 3: Cross multiply
    21,160.06x = 31,677.78 × 15,638.02
  4. Step 4: Simplify right side
    21,160.06x = 495,377,678.00
  5. Step 5: Solve for x
    x = 495,377,678.00/21,160.06
  6. Step 6: Final answer
    x = 23,410.98

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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.