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Finding the Fourth Proportional to 21,671.48, 32,503.90 and 6,878.47

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Solution

The fourth proportional to 21,671.48, 32,503.90 and 6,878.47 is: 10,316.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,671.48 : 32,503.90 = 6,878.47 : x
  2. Step 2: Convert to fraction form
    21,671.48/32,503.90 = 6,878.47/x
  3. Step 3: Cross multiply
    21,671.48x = 32,503.90 × 6,878.47
  4. Step 4: Simplify right side
    21,671.48x = 223,577,101.03
  5. Step 5: Solve for x
    x = 223,577,101.03/21,671.48
  6. Step 6: Final answer
    x = 10,316.65

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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.