Home / 21,028.36-31,564.41-15,487.96

Finding the Fourth Proportional to 21,028.36, 31,564.41 and 15,487.96

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Solution

The fourth proportional to 21,028.36, 31,564.41 and 15,487.96 is: 23,248.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,028.36 : 31,564.41 = 15,487.96 : x
  2. Step 2: Convert to fraction form
    21,028.36/31,564.41 = 15,487.96/x
  3. Step 3: Cross multiply
    21,028.36x = 31,564.41 × 15,487.96
  4. Step 4: Simplify right side
    21,028.36x = 488,868,319.50
  5. Step 5: Solve for x
    x = 488,868,319.50/21,028.36
  6. Step 6: Final answer
    x = 23,248.05

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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.