Home / 12,889.40-19,334.10-9,969.80

Finding the Fourth Proportional to 12,889.40, 19,334.10 and 9,969.80

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Solution

The fourth proportional to 12,889.40, 19,334.10 and 9,969.80 is: 14,954.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,889.40 : 19,334.10 = 9,969.80 : x
  2. Step 2: Convert to fraction form
    12,889.40/19,334.10 = 9,969.80/x
  3. Step 3: Cross multiply
    12,889.40x = 19,334.10 × 9,969.80
  4. Step 4: Simplify right side
    12,889.40x = 192,757,110.18
  5. Step 5: Solve for x
    x = 192,757,110.18/12,889.40
  6. Step 6: Final answer
    x = 14,954.70

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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.