Home / 15,027.66-20,740.32-8,742.06

Finding the Fourth Proportional to 15,027.66, 20,740.32 and 8,742.06

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Solution

The fourth proportional to 15,027.66, 20,740.32 and 8,742.06 is: 12,065.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,027.66 : 20,740.32 = 8,742.06 : x
  2. Step 2: Convert to fraction form
    15,027.66/20,740.32 = 8,742.06/x
  3. Step 3: Cross multiply
    15,027.66x = 20,740.32 × 8,742.06
  4. Step 4: Simplify right side
    15,027.66x = 181,313,121.86
  5. Step 5: Solve for x
    x = 181,313,121.86/15,027.66
  6. Step 6: Final answer
    x = 12,065.29

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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.