Home / 30,439.32-45,674.10-20,556.92

Finding the Fourth Proportional to 30,439.32, 45,674.10 and 20,556.92

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Solution

The fourth proportional to 30,439.32, 45,674.10 and 20,556.92 is: 30,845.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,439.32 : 45,674.10 = 20,556.92 : x
  2. Step 2: Convert to fraction form
    30,439.32/45,674.10 = 20,556.92/x
  3. Step 3: Cross multiply
    30,439.32x = 45,674.10 × 20,556.92
  4. Step 4: Simplify right side
    30,439.32x = 938,918,819.77
  5. Step 5: Solve for x
    x = 938,918,819.77/30,439.32
  6. Step 6: Final answer
    x = 30,845.59

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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.