Home / 21,453.12-32,184.36-8,973.72

Finding the Fourth Proportional to 21,453.12, 32,184.36 and 8,973.72

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Solution

The fourth proportional to 21,453.12, 32,184.36 and 8,973.72 is: 13,462.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,453.12 : 32,184.36 = 8,973.72 : x
  2. Step 2: Convert to fraction form
    21,453.12/32,184.36 = 8,973.72/x
  3. Step 3: Cross multiply
    21,453.12x = 32,184.36 × 8,973.72
  4. Step 4: Simplify right side
    21,453.12x = 288,813,435.02
  5. Step 5: Solve for x
    x = 288,813,435.02/21,453.12
  6. Step 6: Final answer
    x = 13,462.54

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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.