Home / 12,938.65-17,855.28-7,273.56

Finding the Fourth Proportional to 12,938.65, 17,855.28 and 7,273.56

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Solution

The fourth proportional to 12,938.65, 17,855.28 and 7,273.56 is: 10,037.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,938.65 : 17,855.28 = 7,273.56 : x
  2. Step 2: Convert to fraction form
    12,938.65/17,855.28 = 7,273.56/x
  3. Step 3: Cross multiply
    12,938.65x = 17,855.28 × 7,273.56
  4. Step 4: Simplify right side
    12,938.65x = 129,871,450.40
  5. Step 5: Solve for x
    x = 129,871,450.40/12,938.65
  6. Step 6: Final answer
    x = 10,037.48

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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.