Home / 21,513.90-32,270.30-6,729.78

Finding the Fourth Proportional to 21,513.90, 32,270.30 and 6,729.78

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Solution

The fourth proportional to 21,513.90, 32,270.30 and 6,729.78 is: 10,094.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,513.90 : 32,270.30 = 6,729.78 : x
  2. Step 2: Convert to fraction form
    21,513.90/32,270.30 = 6,729.78/x
  3. Step 3: Cross multiply
    21,513.90x = 32,270.30 × 6,729.78
  4. Step 4: Simplify right side
    21,513.90x = 217,172,019.53
  5. Step 5: Solve for x
    x = 217,172,019.53/21,513.90
  6. Step 6: Final answer
    x = 10,094.50

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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.