Home / 30,323.77-45,500.13-13,688.90

Finding the Fourth Proportional to 30,323.77, 45,500.13 and 13,688.90

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Solution

The fourth proportional to 30,323.77, 45,500.13 and 13,688.90 is: 20,539.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,323.77 : 45,500.13 = 13,688.90 : x
  2. Step 2: Convert to fraction form
    30,323.77/45,500.13 = 13,688.90/x
  3. Step 3: Cross multiply
    30,323.77x = 45,500.13 × 13,688.90
  4. Step 4: Simplify right side
    30,323.77x = 622,846,672.68
  5. Step 5: Solve for x
    x = 622,846,672.68/30,323.77
  6. Step 6: Final answer
    x = 20,539.88

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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.