Home / 28,189.01-38,900.75-15,613.76

Finding the Fourth Proportional to 28,189.01, 38,900.75 and 15,613.76

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Solution

The fourth proportional to 28,189.01, 38,900.75 and 15,613.76 is: 21,546.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,189.01 : 38,900.75 = 15,613.76 : x
  2. Step 2: Convert to fraction form
    28,189.01/38,900.75 = 15,613.76/x
  3. Step 3: Cross multiply
    28,189.01x = 38,900.75 × 15,613.76
  4. Step 4: Simplify right side
    28,189.01x = 607,386,993.50
  5. Step 5: Solve for x
    x = 607,386,993.50/28,189.01
  6. Step 6: Final answer
    x = 21,546.94

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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.