Home / 28,221.76-38,933.48-18,148.32

Finding the Fourth Proportional to 28,221.76, 38,933.48 and 18,148.32

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Solution

The fourth proportional to 28,221.76, 38,933.48 and 18,148.32 is: 25,036.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,221.76 : 38,933.48 = 18,148.32 : x
  2. Step 2: Convert to fraction form
    28,221.76/38,933.48 = 18,148.32/x
  3. Step 3: Cross multiply
    28,221.76x = 38,933.48 × 18,148.32
  4. Step 4: Simplify right side
    28,221.76x = 706,577,253.75
  5. Step 5: Solve for x
    x = 706,577,253.75/28,221.76
  6. Step 6: Final answer
    x = 25,036.61

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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.