Home / 21,318.32-31,977.60-5,522.25

Finding the Fourth Proportional to 21,318.32, 31,977.60 and 5,522.25

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Solution

The fourth proportional to 21,318.32, 31,977.60 and 5,522.25 is: 8,283.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,318.32 : 31,977.60 = 5,522.25 : x
  2. Step 2: Convert to fraction form
    21,318.32/31,977.60 = 5,522.25/x
  3. Step 3: Cross multiply
    21,318.32x = 31,977.60 × 5,522.25
  4. Step 4: Simplify right side
    21,318.32x = 176,588,301.60
  5. Step 5: Solve for x
    x = 176,588,301.60/21,318.32
  6. Step 6: Final answer
    x = 8,283.41

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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.