Home / 20,431.49-28,191.15-12,043.13

Finding the Fourth Proportional to 20,431.49, 28,191.15 and 12,043.13

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Solution

The fourth proportional to 20,431.49, 28,191.15 and 12,043.13 is: 16,616.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,431.49 : 28,191.15 = 12,043.13 : x
  2. Step 2: Convert to fraction form
    20,431.49/28,191.15 = 12,043.13/x
  3. Step 3: Cross multiply
    20,431.49x = 28,191.15 × 12,043.13
  4. Step 4: Simplify right side
    20,431.49x = 339,509,543.34
  5. Step 5: Solve for x
    x = 339,509,543.34/20,431.49
  6. Step 6: Final answer
    x = 16,616.98

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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.