Home / 21,308.22-29,400.23-13,752.95

Finding the Fourth Proportional to 21,308.22, 29,400.23 and 13,752.95

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Solution

The fourth proportional to 21,308.22, 29,400.23 and 13,752.95 is: 18,975.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,308.22 : 29,400.23 = 13,752.95 : x
  2. Step 2: Convert to fraction form
    21,308.22/29,400.23 = 13,752.95/x
  3. Step 3: Cross multiply
    21,308.22x = 29,400.23 × 13,752.95
  4. Step 4: Simplify right side
    21,308.22x = 404,339,746.18
  5. Step 5: Solve for x
    x = 404,339,746.18/21,308.22
  6. Step 6: Final answer
    x = 18,975.76

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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.