Home / 28,034.88-38,687.63-15,288.15

Finding the Fourth Proportional to 28,034.88, 38,687.63 and 15,288.15

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Solution

The fourth proportional to 28,034.88, 38,687.63 and 15,288.15 is: 21,097.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,034.88 : 38,687.63 = 15,288.15 : x
  2. Step 2: Convert to fraction form
    28,034.88/38,687.63 = 15,288.15/x
  3. Step 3: Cross multiply
    28,034.88x = 38,687.63 × 15,288.15
  4. Step 4: Simplify right side
    28,034.88x = 591,462,214.14
  5. Step 5: Solve for x
    x = 591,462,214.14/28,034.88
  6. Step 6: Final answer
    x = 21,097.37

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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.