Home / 21,948.14-30,278.54-15,249.84

Finding the Fourth Proportional to 21,948.14, 30,278.54 and 15,249.84

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Solution

The fourth proportional to 21,948.14, 30,278.54 and 15,249.84 is: 21,037.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,948.14 : 30,278.54 = 15,249.84 : x
  2. Step 2: Convert to fraction form
    21,948.14/30,278.54 = 15,249.84/x
  3. Step 3: Cross multiply
    21,948.14x = 30,278.54 × 15,249.84
  4. Step 4: Simplify right side
    21,948.14x = 461,742,890.43
  5. Step 5: Solve for x
    x = 461,742,890.43/21,948.14
  6. Step 6: Final answer
    x = 21,037.91

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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.