Home / 28,198.68-38,914.86-15,624.12

Finding the Fourth Proportional to 28,198.68, 38,914.86 and 15,624.12

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Solution

The fourth proportional to 28,198.68, 38,914.86 and 15,624.12 is: 21,561.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,198.68 : 38,914.86 = 15,624.12 : x
  2. Step 2: Convert to fraction form
    28,198.68/38,914.86 = 15,624.12/x
  3. Step 3: Cross multiply
    28,198.68x = 38,914.86 × 15,624.12
  4. Step 4: Simplify right side
    28,198.68x = 608,010,442.42
  5. Step 5: Solve for x
    x = 608,010,442.42/28,198.68
  6. Step 6: Final answer
    x = 21,561.66

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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.