Home / 15,283.16-21,090.68-8,568.78

Finding the Fourth Proportional to 15,283.16, 21,090.68 and 8,568.78

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Solution

The fourth proportional to 15,283.16, 21,090.68 and 8,568.78 is: 11,824.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,283.16 : 21,090.68 = 8,568.78 : x
  2. Step 2: Convert to fraction form
    15,283.16/21,090.68 = 8,568.78/x
  3. Step 3: Cross multiply
    15,283.16x = 21,090.68 × 8,568.78
  4. Step 4: Simplify right side
    15,283.16x = 180,721,396.97
  5. Step 5: Solve for x
    x = 180,721,396.97/15,283.16
  6. Step 6: Final answer
    x = 11,824.87

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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.