Home / 21,878.28-32,819.45-16,953.43

Finding the Fourth Proportional to 21,878.28, 32,819.45 and 16,953.43

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Solution

The fourth proportional to 21,878.28, 32,819.45 and 16,953.43 is: 25,431.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,878.28 : 32,819.45 = 16,953.43 : x
  2. Step 2: Convert to fraction form
    21,878.28/32,819.45 = 16,953.43/x
  3. Step 3: Cross multiply
    21,878.28x = 32,819.45 × 16,953.43
  4. Step 4: Simplify right side
    21,878.28x = 556,402,086.39
  5. Step 5: Solve for x
    x = 556,402,086.39/21,878.28
  6. Step 6: Final answer
    x = 25,431.71

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.