Home / 28,189.08-38,900.98-15,613.56

Finding the Fourth Proportional to 28,189.08, 38,900.98 and 15,613.56

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Solution

The fourth proportional to 28,189.08, 38,900.98 and 15,613.56 is: 21,546.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,189.08 : 38,900.98 = 15,613.56 : x
  2. Step 2: Convert to fraction form
    28,189.08/38,900.98 = 15,613.56/x
  3. Step 3: Cross multiply
    28,189.08x = 38,900.98 × 15,613.56
  4. Step 4: Simplify right side
    28,189.08x = 607,382,785.29
  5. Step 5: Solve for x
    x = 607,382,785.29/28,189.08
  6. Step 6: Final answer
    x = 21,546.74

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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.