Home / 15,348.10-21,183.78-10,039.90

Finding the Fourth Proportional to 15,348.10, 21,183.78 and 10,039.90

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Solution

The fourth proportional to 15,348.10, 21,183.78 and 10,039.90 is: 13,857.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,348.10 : 21,183.78 = 10,039.90 : x
  2. Step 2: Convert to fraction form
    15,348.10/21,183.78 = 10,039.90/x
  3. Step 3: Cross multiply
    15,348.10x = 21,183.78 × 10,039.90
  4. Step 4: Simplify right side
    15,348.10x = 212,683,032.82
  5. Step 5: Solve for x
    x = 212,683,032.82/15,348.10
  6. Step 6: Final answer
    x = 13,857.29

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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.