Home / 21,102.66-31,654.29-5,520.28

Finding the Fourth Proportional to 21,102.66, 31,654.29 and 5,520.28

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Solution

The fourth proportional to 21,102.66, 31,654.29 and 5,520.28 is: 8,280.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,102.66 : 31,654.29 = 5,520.28 : x
  2. Step 2: Convert to fraction form
    21,102.66/31,654.29 = 5,520.28/x
  3. Step 3: Cross multiply
    21,102.66x = 31,654.29 × 5,520.28
  4. Step 4: Simplify right side
    21,102.66x = 174,740,544.00
  5. Step 5: Solve for x
    x = 174,740,544.00/21,102.66
  6. Step 6: Final answer
    x = 8,280.50

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1.5x scale

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.