Home / 11,720.18-16,185.30-10,031.96

Finding the Fourth Proportional to 11,720.18, 16,185.30 and 10,031.96

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Solution

The fourth proportional to 11,720.18, 16,185.30 and 10,031.96 is: 13,853.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,720.18 : 16,185.30 = 10,031.96 : x
  2. Step 2: Convert to fraction form
    11,720.18/16,185.30 = 10,031.96/x
  3. Step 3: Cross multiply
    11,720.18x = 16,185.30 × 10,031.96
  4. Step 4: Simplify right side
    11,720.18x = 162,370,282.19
  5. Step 5: Solve for x
    x = 162,370,282.19/11,720.18
  6. Step 6: Final answer
    x = 13,853.91

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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.