Home / 20,603.76-28,433.87-11,652.72

Finding the Fourth Proportional to 20,603.76, 28,433.87 and 11,652.72

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Solution

The fourth proportional to 20,603.76, 28,433.87 and 11,652.72 is: 16,081.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,603.76 : 28,433.87 = 11,652.72 : x
  2. Step 2: Convert to fraction form
    20,603.76/28,433.87 = 11,652.72/x
  3. Step 3: Cross multiply
    20,603.76x = 28,433.87 × 11,652.72
  4. Step 4: Simplify right side
    20,603.76x = 331,331,725.19
  5. Step 5: Solve for x
    x = 331,331,725.19/20,603.76
  6. Step 6: Final answer
    x = 16,081.13

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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.