Home / 21,279.69-29,344.22-14,107.12

Finding the Fourth Proportional to 21,279.69, 29,344.22 and 14,107.12

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Solution

The fourth proportional to 21,279.69, 29,344.22 and 14,107.12 is: 19,453.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,279.69 : 29,344.22 = 14,107.12 : x
  2. Step 2: Convert to fraction form
    21,279.69/29,344.22 = 14,107.12/x
  3. Step 3: Cross multiply
    21,279.69x = 29,344.22 × 14,107.12
  4. Step 4: Simplify right side
    21,279.69x = 413,962,432.85
  5. Step 5: Solve for x
    x = 413,962,432.85/21,279.69
  6. Step 6: Final answer
    x = 19,453.41

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Half scale
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Double scale
Find fourth proportional to 21,280.69, 29,345.60 and 14,108.12
Similar ratio
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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.