Home / 21,878.96-32,818.82-6,885.71

Finding the Fourth Proportional to 21,878.96, 32,818.82 and 6,885.71

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Solution

The fourth proportional to 21,878.96, 32,818.82 and 6,885.71 is: 10,328.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,878.96 : 32,818.82 = 6,885.71 : x
  2. Step 2: Convert to fraction form
    21,878.96/32,818.82 = 6,885.71/x
  3. Step 3: Cross multiply
    21,878.96x = 32,818.82 × 6,885.71
  4. Step 4: Simplify right side
    21,878.96x = 225,980,840.34
  5. Step 5: Solve for x
    x = 225,980,840.34/21,878.96
  6. Step 6: Final answer
    x = 10,328.68

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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.