Home / 28,118.58-42,180.33-11,479.76

Finding the Fourth Proportional to 28,118.58, 42,180.33 and 11,479.76

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Solution

The fourth proportional to 28,118.58, 42,180.33 and 11,479.76 is: 17,220.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,118.58 : 42,180.33 = 11,479.76 : x
  2. Step 2: Convert to fraction form
    28,118.58/42,180.33 = 11,479.76/x
  3. Step 3: Cross multiply
    28,118.58x = 42,180.33 × 11,479.76
  4. Step 4: Simplify right side
    28,118.58x = 484,219,854.22
  5. Step 5: Solve for x
    x = 484,219,854.22/28,118.58
  6. Step 6: Final answer
    x = 17,220.64

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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.