Home / 20,512.53-28,302.06-12,551.85

Finding the Fourth Proportional to 20,512.53, 28,302.06 and 12,551.85

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Solution

The fourth proportional to 20,512.53, 28,302.06 and 12,551.85 is: 17,318.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,512.53 : 28,302.06 = 12,551.85 : x
  2. Step 2: Convert to fraction form
    20,512.53/28,302.06 = 12,551.85/x
  3. Step 3: Cross multiply
    20,512.53x = 28,302.06 × 12,551.85
  4. Step 4: Simplify right side
    20,512.53x = 355,243,211.81
  5. Step 5: Solve for x
    x = 355,243,211.81/20,512.53
  6. Step 6: Final answer
    x = 17,318.35

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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.