Home / 20,689.17-28,553.15-12,194.03

Finding the Fourth Proportional to 20,689.17, 28,553.15 and 12,194.03

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Solution

The fourth proportional to 20,689.17, 28,553.15 and 12,194.03 is: 16,829.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,689.17 : 28,553.15 = 12,194.03 : x
  2. Step 2: Convert to fraction form
    20,689.17/28,553.15 = 12,194.03/x
  3. Step 3: Cross multiply
    20,689.17x = 28,553.15 × 12,194.03
  4. Step 4: Simplify right side
    20,689.17x = 348,177,967.69
  5. Step 5: Solve for x
    x = 348,177,967.69/20,689.17
  6. Step 6: Final answer
    x = 16,829.00

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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.