Home / 13,787.38-20,683.40-4,427.22

Finding the Fourth Proportional to 13,787.38, 20,683.40 and 4,427.22

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Solution

The fourth proportional to 13,787.38, 20,683.40 and 4,427.22 is: 6,641.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,787.38 : 20,683.40 = 4,427.22 : x
  2. Step 2: Convert to fraction form
    13,787.38/20,683.40 = 4,427.22/x
  3. Step 3: Cross multiply
    13,787.38x = 20,683.40 × 4,427.22
  4. Step 4: Simplify right side
    13,787.38x = 91,569,962.15
  5. Step 5: Solve for x
    x = 91,569,962.15/13,787.38
  6. Step 6: Final answer
    x = 6,641.58

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1.5x scale

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.