Home / 13,213.61-19,781.53-8,820.17

Finding the Fourth Proportional to 13,213.61, 19,781.53 and 8,820.17

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Solution

The fourth proportional to 13,213.61, 19,781.53 and 8,820.17 is: 13,204.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,213.61 : 19,781.53 = 8,820.17 : x
  2. Step 2: Convert to fraction form
    13,213.61/19,781.53 = 8,820.17/x
  3. Step 3: Cross multiply
    13,213.61x = 19,781.53 × 8,820.17
  4. Step 4: Simplify right side
    13,213.61x = 174,476,460.30
  5. Step 5: Solve for x
    x = 174,476,460.30/13,213.61
  6. Step 6: Final answer
    x = 13,204.30

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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.