Home / 21,530.52-29,699.96-13,559.04

Finding the Fourth Proportional to 21,530.52, 29,699.96 and 13,559.04

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Solution

The fourth proportional to 21,530.52, 29,699.96 and 13,559.04 is: 18,703.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,530.52 : 29,699.96 = 13,559.04 : x
  2. Step 2: Convert to fraction form
    21,530.52/29,699.96 = 13,559.04/x
  3. Step 3: Cross multiply
    21,530.52x = 29,699.96 × 13,559.04
  4. Step 4: Simplify right side
    21,530.52x = 402,702,945.64
  5. Step 5: Solve for x
    x = 402,702,945.64/21,530.52
  6. Step 6: Final answer
    x = 18,703.82

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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.