Home / 21,311.16-29,412.18-15,362.52

Finding the Fourth Proportional to 21,311.16, 29,412.18 and 15,362.52

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Solution

The fourth proportional to 21,311.16, 29,412.18 and 15,362.52 is: 21,202.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,311.16 : 29,412.18 = 15,362.52 : x
  2. Step 2: Convert to fraction form
    21,311.16/29,412.18 = 15,362.52/x
  3. Step 3: Cross multiply
    21,311.16x = 29,412.18 × 15,362.52
  4. Step 4: Simplify right side
    21,311.16x = 451,845,203.49
  5. Step 5: Solve for x
    x = 451,845,203.49/21,311.16
  6. Step 6: Final answer
    x = 21,202.28

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.