Home / 13,971.84-19,311.96-12,280.56

Finding the Fourth Proportional to 13,971.84, 19,311.96 and 12,280.56

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Solution

The fourth proportional to 13,971.84, 19,311.96 and 12,280.56 is: 16,974.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,971.84 : 19,311.96 = 12,280.56 : x
  2. Step 2: Convert to fraction form
    13,971.84/19,311.96 = 12,280.56/x
  3. Step 3: Cross multiply
    13,971.84x = 19,311.96 × 12,280.56
  4. Step 4: Simplify right side
    13,971.84x = 237,161,683.50
  5. Step 5: Solve for x
    x = 237,161,683.50/13,971.84
  6. Step 6: Final answer
    x = 16,974.26

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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.