Home / 20,008.75-30,031.32-10,656.61

Finding the Fourth Proportional to 20,008.75, 30,031.32 and 10,656.61

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Solution

The fourth proportional to 20,008.75, 30,031.32 and 10,656.61 is: 15,994.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,008.75 : 30,031.32 = 10,656.61 : x
  2. Step 2: Convert to fraction form
    20,008.75/30,031.32 = 10,656.61/x
  3. Step 3: Cross multiply
    20,008.75x = 30,031.32 × 10,656.61
  4. Step 4: Simplify right side
    20,008.75x = 320,032,065.03
  5. Step 5: Solve for x
    x = 320,032,065.03/20,008.75
  6. Step 6: Final answer
    x = 15,994.61

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.