Home / 21,267.86-29,357.66-15,977.96

Finding the Fourth Proportional to 21,267.86, 29,357.66 and 15,977.96

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Solution

The fourth proportional to 21,267.86, 29,357.66 and 15,977.96 is: 22,055.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,267.86 : 29,357.66 = 15,977.96 : x
  2. Step 2: Convert to fraction form
    21,267.86/29,357.66 = 15,977.96/x
  3. Step 3: Cross multiply
    21,267.86x = 29,357.66 × 15,977.96
  4. Step 4: Simplify right side
    21,267.86x = 469,075,290.50
  5. Step 5: Solve for x
    x = 469,075,290.50/21,267.86
  6. Step 6: Final answer
    x = 22,055.59

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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.