Home / 13,208.29-18,227.40-7,903.10

Finding the Fourth Proportional to 13,208.29, 18,227.40 and 7,903.10

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Solution

The fourth proportional to 13,208.29, 18,227.40 and 7,903.10 is: 10,906.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,208.29 : 18,227.40 = 7,903.10 : x
  2. Step 2: Convert to fraction form
    13,208.29/18,227.40 = 7,903.10/x
  3. Step 3: Cross multiply
    13,208.29x = 18,227.40 × 7,903.10
  4. Step 4: Simplify right side
    13,208.29x = 144,052,964.94
  5. Step 5: Solve for x
    x = 144,052,964.94/13,208.29
  6. Step 6: Final answer
    x = 10,906.25

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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.