Home / 21,261.26-29,330.72-13,710.02

Finding the Fourth Proportional to 21,261.26, 29,330.72 and 13,710.02

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Solution

The fourth proportional to 21,261.26, 29,330.72 and 13,710.02 is: 18,913.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,261.26 : 29,330.72 = 13,710.02 : x
  2. Step 2: Convert to fraction form
    21,261.26/29,330.72 = 13,710.02/x
  3. Step 3: Cross multiply
    21,261.26x = 29,330.72 × 13,710.02
  4. Step 4: Simplify right side
    21,261.26x = 402,124,757.81
  5. Step 5: Solve for x
    x = 402,124,757.81/21,261.26
  6. Step 6: Final answer
    x = 18,913.50

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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.