Home / 13,010.28-17,949.54-7,972.68

Finding the Fourth Proportional to 13,010.28, 17,949.54 and 7,972.68

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Solution

The fourth proportional to 13,010.28, 17,949.54 and 7,972.68 is: 10,999.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,010.28 : 17,949.54 = 7,972.68 : x
  2. Step 2: Convert to fraction form
    13,010.28/17,949.54 = 7,972.68/x
  3. Step 3: Cross multiply
    13,010.28x = 17,949.54 × 7,972.68
  4. Step 4: Simplify right side
    13,010.28x = 143,105,938.57
  5. Step 5: Solve for x
    x = 143,105,938.57/13,010.28
  6. Step 6: Final answer
    x = 10,999.45

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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.