Home / 20,031.30-27,652.86-13,328.10

Finding the Fourth Proportional to 20,031.30, 27,652.86 and 13,328.10

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Solution

The fourth proportional to 20,031.30, 27,652.86 and 13,328.10 is: 18,399.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,031.30 : 27,652.86 = 13,328.10 : x
  2. Step 2: Convert to fraction form
    20,031.30/27,652.86 = 13,328.10/x
  3. Step 3: Cross multiply
    20,031.30x = 27,652.86 × 13,328.10
  4. Step 4: Simplify right side
    20,031.30x = 368,560,083.37
  5. Step 5: Solve for x
    x = 368,560,083.37/20,031.30
  6. Step 6: Final answer
    x = 18,399.21

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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.