Home / 20,483.78-30,740.25-15,808.46

Finding the Fourth Proportional to 20,483.78, 30,740.25 and 15,808.46

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Solution

The fourth proportional to 20,483.78, 30,740.25 and 15,808.46 is: 23,723.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,483.78 : 30,740.25 = 15,808.46 : x
  2. Step 2: Convert to fraction form
    20,483.78/30,740.25 = 15,808.46/x
  3. Step 3: Cross multiply
    20,483.78x = 30,740.25 × 15,808.46
  4. Step 4: Simplify right side
    20,483.78x = 485,956,012.52
  5. Step 5: Solve for x
    x = 485,956,012.52/20,483.78
  6. Step 6: Final answer
    x = 23,723.94

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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.