Home / 20,332.32-28,056.24-11,380.32

Finding the Fourth Proportional to 20,332.32, 28,056.24 and 11,380.32

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Solution

The fourth proportional to 20,332.32, 28,056.24 and 11,380.32 is: 15,703.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,332.32 : 28,056.24 = 11,380.32 : x
  2. Step 2: Convert to fraction form
    20,332.32/28,056.24 = 11,380.32/x
  3. Step 3: Cross multiply
    20,332.32x = 28,056.24 × 11,380.32
  4. Step 4: Simplify right side
    20,332.32x = 319,288,989.20
  5. Step 5: Solve for x
    x = 319,288,989.20/20,332.32
  6. Step 6: Final answer
    x = 15,703.52

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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.