Home / 21,891.36-30,135.60-16,577.76

Finding the Fourth Proportional to 21,891.36, 30,135.60 and 16,577.76

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Solution

The fourth proportional to 21,891.36, 30,135.60 and 16,577.76 is: 22,820.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,891.36 : 30,135.60 = 16,577.76 : x
  2. Step 2: Convert to fraction form
    21,891.36/30,135.60 = 16,577.76/x
  3. Step 3: Cross multiply
    21,891.36x = 30,135.60 × 16,577.76
  4. Step 4: Simplify right side
    21,891.36x = 499,580,744.26
  5. Step 5: Solve for x
    x = 499,580,744.26/21,891.36
  6. Step 6: Final answer
    x = 22,820.91

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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.