Home / 21,543.52-29,747.28-13,993.60

Finding the Fourth Proportional to 21,543.52, 29,747.28 and 13,993.60

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Solution

The fourth proportional to 21,543.52, 29,747.28 and 13,993.60 is: 19,322.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,543.52 : 29,747.28 = 13,993.60 : x
  2. Step 2: Convert to fraction form
    21,543.52/29,747.28 = 13,993.60/x
  3. Step 3: Cross multiply
    21,543.52x = 29,747.28 × 13,993.60
  4. Step 4: Simplify right side
    21,543.52x = 416,271,537.41
  5. Step 5: Solve for x
    x = 416,271,537.41/21,543.52
  6. Step 6: Final answer
    x = 19,322.35

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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.