Home / 13,221.53-18,246.56-8,737.42

Finding the Fourth Proportional to 13,221.53, 18,246.56 and 8,737.42

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Solution

The fourth proportional to 13,221.53, 18,246.56 and 8,737.42 is: 12,058.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,221.53 : 18,246.56 = 8,737.42 : x
  2. Step 2: Convert to fraction form
    13,221.53/18,246.56 = 8,737.42/x
  3. Step 3: Cross multiply
    13,221.53x = 18,246.56 × 8,737.42
  4. Step 4: Simplify right side
    13,221.53x = 159,427,858.28
  5. Step 5: Solve for x
    x = 159,427,858.28/13,221.53
  6. Step 6: Final answer
    x = 12,058.20

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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.