Home / 13,986.34-21,056.07-12,761.62

Finding the Fourth Proportional to 13,986.34, 21,056.07 and 12,761.62

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Solution

The fourth proportional to 13,986.34, 21,056.07 and 12,761.62 is: 19,212.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,986.34 : 21,056.07 = 12,761.62 : x
  2. Step 2: Convert to fraction form
    13,986.34/21,056.07 = 12,761.62/x
  3. Step 3: Cross multiply
    13,986.34x = 21,056.07 × 12,761.62
  4. Step 4: Simplify right side
    13,986.34x = 268,709,487.47
  5. Step 5: Solve for x
    x = 268,709,487.47/13,986.34
  6. Step 6: Final answer
    x = 19,212.28

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.