Home / 20,655.60-30,961.74-10,111.08

Finding the Fourth Proportional to 20,655.60, 30,961.74 and 10,111.08

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Solution

The fourth proportional to 20,655.60, 30,961.74 and 10,111.08 is: 15,156.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,655.60 : 30,961.74 = 10,111.08 : x
  2. Step 2: Convert to fraction form
    20,655.60/30,961.74 = 10,111.08/x
  3. Step 3: Cross multiply
    20,655.60x = 30,961.74 × 10,111.08
  4. Step 4: Simplify right side
    20,655.60x = 313,056,630.08
  5. Step 5: Solve for x
    x = 313,056,630.08/20,655.60
  6. Step 6: Final answer
    x = 15,156.02

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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.