Home / 20,655.96-30,985.98-6,612.45

Finding the Fourth Proportional to 20,655.96, 30,985.98 and 6,612.45

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Solution

The fourth proportional to 20,655.96, 30,985.98 and 6,612.45 is: 9,919.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,655.96 : 30,985.98 = 6,612.45 : x
  2. Step 2: Convert to fraction form
    20,655.96/30,985.98 = 6,612.45/x
  3. Step 3: Cross multiply
    20,655.96x = 30,985.98 × 6,612.45
  4. Step 4: Simplify right side
    20,655.96x = 204,893,243.45
  5. Step 5: Solve for x
    x = 204,893,243.45/20,655.96
  6. Step 6: Final answer
    x = 9,919.33

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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.