Home / 21,877.08-30,192.96-12,447.12

Finding the Fourth Proportional to 21,877.08, 30,192.96 and 12,447.12

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Solution

The fourth proportional to 21,877.08, 30,192.96 and 12,447.12 is: 17,178.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,877.08 : 30,192.96 = 12,447.12 : x
  2. Step 2: Convert to fraction form
    21,877.08/30,192.96 = 12,447.12/x
  3. Step 3: Cross multiply
    21,877.08x = 30,192.96 × 12,447.12
  4. Step 4: Simplify right side
    21,877.08x = 375,815,396.28
  5. Step 5: Solve for x
    x = 375,815,396.28/21,877.08
  6. Step 6: Final answer
    x = 17,178.50

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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.