Home / 21,077.76-29,051.28-16,353.12

Finding the Fourth Proportional to 21,077.76, 29,051.28 and 16,353.12

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Solution

The fourth proportional to 21,077.76, 29,051.28 and 16,353.12 is: 22,539.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,077.76 : 29,051.28 = 16,353.12 : x
  2. Step 2: Convert to fraction form
    21,077.76/29,051.28 = 16,353.12/x
  3. Step 3: Cross multiply
    21,077.76x = 29,051.28 × 16,353.12
  4. Step 4: Simplify right side
    21,077.76x = 475,079,067.99
  5. Step 5: Solve for x
    x = 475,079,067.99/21,077.76
  6. Step 6: Final answer
    x = 22,539.35

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Double scale
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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.