Home / 20,512.24-28,307.10-12,012.49

Finding the Fourth Proportional to 20,512.24, 28,307.10 and 12,012.49

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Solution

The fourth proportional to 20,512.24, 28,307.10 and 12,012.49 is: 16,577.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,512.24 : 28,307.10 = 12,012.49 : x
  2. Step 2: Convert to fraction form
    20,512.24/28,307.10 = 12,012.49/x
  3. Step 3: Cross multiply
    20,512.24x = 28,307.10 × 12,012.49
  4. Step 4: Simplify right side
    20,512.24x = 340,038,755.68
  5. Step 5: Solve for x
    x = 340,038,755.68/20,512.24
  6. Step 6: Final answer
    x = 16,577.36

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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.