Home / 21,878.07-30,175.62-16,500.74

Finding the Fourth Proportional to 21,878.07, 30,175.62 and 16,500.74

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Solution

The fourth proportional to 21,878.07, 30,175.62 and 16,500.74 is: 22,758.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,878.07 : 30,175.62 = 16,500.74 : x
  2. Step 2: Convert to fraction form
    21,878.07/30,175.62 = 16,500.74/x
  3. Step 3: Cross multiply
    21,878.07x = 30,175.62 × 16,500.74
  4. Step 4: Simplify right side
    21,878.07x = 497,919,909.08
  5. Step 5: Solve for x
    x = 497,919,909.08/21,878.07
  6. Step 6: Final answer
    x = 22,758.86

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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.