Home / 21,427.26-29,569.62-13,043.76

Finding the Fourth Proportional to 21,427.26, 29,569.62 and 13,043.76

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Solution

The fourth proportional to 21,427.26, 29,569.62 and 13,043.76 is: 18,000.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,427.26 : 29,569.62 = 13,043.76 : x
  2. Step 2: Convert to fraction form
    21,427.26/29,569.62 = 13,043.76/x
  3. Step 3: Cross multiply
    21,427.26x = 29,569.62 × 13,043.76
  4. Step 4: Simplify right side
    21,427.26x = 385,699,026.57
  5. Step 5: Solve for x
    x = 385,699,026.57/21,427.26
  6. Step 6: Final answer
    x = 18,000.39

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1.5x scale

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.