Home / 20,512.72-28,314.58-12,017.57

Finding the Fourth Proportional to 20,512.72, 28,314.58 and 12,017.57

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Solution

The fourth proportional to 20,512.72, 28,314.58 and 12,017.57 is: 16,588.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,512.72 : 28,314.58 = 12,017.57 : x
  2. Step 2: Convert to fraction form
    20,512.72/28,314.58 = 12,017.57/x
  3. Step 3: Cross multiply
    20,512.72x = 28,314.58 × 12,017.57
  4. Step 4: Simplify right side
    20,512.72x = 340,272,447.17
  5. Step 5: Solve for x
    x = 340,272,447.17/20,512.72
  6. Step 6: Final answer
    x = 16,588.37

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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.