Home / 20,655.61-30,985.74-6,612.33

Finding the Fourth Proportional to 20,655.61, 30,985.74 and 6,612.33

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Solution

The fourth proportional to 20,655.61, 30,985.74 and 6,612.33 is: 9,919.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,655.61 : 30,985.74 = 6,612.33 : x
  2. Step 2: Convert to fraction form
    20,655.61/30,985.74 = 6,612.33/x
  3. Step 3: Cross multiply
    20,655.61x = 30,985.74 × 6,612.33
  4. Step 4: Simplify right side
    20,655.61x = 204,888,054.37
  5. Step 5: Solve for x
    x = 204,888,054.37/20,655.61
  6. Step 6: Final answer
    x = 9,919.25

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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.