Home / 21,977.12-32,970.29-7,184.87

Finding the Fourth Proportional to 21,977.12, 32,970.29 and 7,184.87

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Solution

The fourth proportional to 21,977.12, 32,970.29 and 7,184.87 is: 10,778.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,977.12 : 32,970.29 = 7,184.87 : x
  2. Step 2: Convert to fraction form
    21,977.12/32,970.29 = 7,184.87/x
  3. Step 3: Cross multiply
    21,977.12x = 32,970.29 × 7,184.87
  4. Step 4: Simplify right side
    21,977.12x = 236,887,100.62
  5. Step 5: Solve for x
    x = 236,887,100.62/21,977.12
  6. Step 6: Final answer
    x = 10,778.81

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.