Home / 16,731.45-23,090.13-10,015.78

Finding the Fourth Proportional to 16,731.45, 23,090.13 and 10,015.78

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Solution

The fourth proportional to 16,731.45, 23,090.13 and 10,015.78 is: 13,822.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    16,731.45 : 23,090.13 = 10,015.78 : x
  2. Step 2: Convert to fraction form
    16,731.45/23,090.13 = 10,015.78/x
  3. Step 3: Cross multiply
    16,731.45x = 23,090.13 × 10,015.78
  4. Step 4: Simplify right side
    16,731.45x = 231,265,554.45
  5. Step 5: Solve for x
    x = 231,265,554.45/16,731.45
  6. Step 6: Final answer
    x = 13,822.21

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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.