Home / 20,191.61-30,213.60-11,875.54

Finding the Fourth Proportional to 20,191.61, 30,213.60 and 11,875.54

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Solution

The fourth proportional to 20,191.61, 30,213.60 and 11,875.54 is: 17,769.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,191.61 : 30,213.60 = 11,875.54 : x
  2. Step 2: Convert to fraction form
    20,191.61/30,213.60 = 11,875.54/x
  3. Step 3: Cross multiply
    20,191.61x = 30,213.60 × 11,875.54
  4. Step 4: Simplify right side
    20,191.61x = 358,802,815.34
  5. Step 5: Solve for x
    x = 358,802,815.34/20,191.61
  6. Step 6: Final answer
    x = 17,769.90

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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.