Home / 13,220.11-19,812.30-4,892.32

Finding the Fourth Proportional to 13,220.11, 19,812.30 and 4,892.32

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Solution

The fourth proportional to 13,220.11, 19,812.30 and 4,892.32 is: 7,331.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,220.11 : 19,812.30 = 4,892.32 : x
  2. Step 2: Convert to fraction form
    13,220.11/19,812.30 = 4,892.32/x
  3. Step 3: Cross multiply
    13,220.11x = 19,812.30 × 4,892.32
  4. Step 4: Simplify right side
    13,220.11x = 96,928,111.54
  5. Step 5: Solve for x
    x = 96,928,111.54/13,220.11
  6. Step 6: Final answer
    x = 7,331.87

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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.