Home / 13,264.40-19,906.20-5,478.80

Finding the Fourth Proportional to 13,264.40, 19,906.20 and 5,478.80

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Solution

The fourth proportional to 13,264.40, 19,906.20 and 5,478.80 is: 8,222.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,264.40 : 19,906.20 = 5,478.80 : x
  2. Step 2: Convert to fraction form
    13,264.40/19,906.20 = 5,478.80/x
  3. Step 3: Cross multiply
    13,264.40x = 19,906.20 × 5,478.80
  4. Step 4: Simplify right side
    13,264.40x = 109,062,088.56
  5. Step 5: Solve for x
    x = 109,062,088.56/13,264.40
  6. Step 6: Final answer
    x = 8,222.17

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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.