Home / 20,592.50-30,930.08-12,288.72

Finding the Fourth Proportional to 20,592.50, 30,930.08 and 12,288.72

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Solution

The fourth proportional to 20,592.50, 30,930.08 and 12,288.72 is: 18,457.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,592.50 : 30,930.08 = 12,288.72 : x
  2. Step 2: Convert to fraction form
    20,592.50/30,930.08 = 12,288.72/x
  3. Step 3: Cross multiply
    20,592.50x = 30,930.08 × 12,288.72
  4. Step 4: Simplify right side
    20,592.50x = 380,091,092.70
  5. Step 5: Solve for x
    x = 380,091,092.70/20,592.50
  6. Step 6: Final answer
    x = 18,457.74

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.