Home / 13,204.71-18,222.51-7,900.79

Finding the Fourth Proportional to 13,204.71, 18,222.51 and 7,900.79

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Solution

The fourth proportional to 13,204.71, 18,222.51 and 7,900.79 is: 10,903.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,204.71 : 18,222.51 = 7,900.79 : x
  2. Step 2: Convert to fraction form
    13,204.71/18,222.51 = 7,900.79/x
  3. Step 3: Cross multiply
    13,204.71x = 18,222.51 × 7,900.79
  4. Step 4: Simplify right side
    13,204.71x = 143,972,133.67
  5. Step 5: Solve for x
    x = 143,972,133.67/13,204.71
  6. Step 6: Final answer
    x = 10,903.09

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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.