Home / 21,356.18-29,463.72-13,395.50

Finding the Fourth Proportional to 21,356.18, 29,463.72 and 13,395.50

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Solution

The fourth proportional to 21,356.18, 29,463.72 and 13,395.50 is: 18,480.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,356.18 : 29,463.72 = 13,395.50 : x
  2. Step 2: Convert to fraction form
    21,356.18/29,463.72 = 13,395.50/x
  3. Step 3: Cross multiply
    21,356.18x = 29,463.72 × 13,395.50
  4. Step 4: Simplify right side
    21,356.18x = 394,681,261.26
  5. Step 5: Solve for x
    x = 394,681,261.26/21,356.18
  6. Step 6: Final answer
    x = 18,480.89

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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.