Home / 12,554.70-18,822.32-7,281.60

Finding the Fourth Proportional to 12,554.70, 18,822.32 and 7,281.60

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Solution

The fourth proportional to 12,554.70, 18,822.32 and 7,281.60 is: 10,916.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,554.70 : 18,822.32 = 7,281.60 : x
  2. Step 2: Convert to fraction form
    12,554.70/18,822.32 = 7,281.60/x
  3. Step 3: Cross multiply
    12,554.70x = 18,822.32 × 7,281.60
  4. Step 4: Simplify right side
    12,554.70x = 137,056,568.90
  5. Step 5: Solve for x
    x = 137,056,568.90/12,554.70
  6. Step 6: Final answer
    x = 10,916.75

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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.