Home / 30,215.46-45,319.47-15,435.06

Finding the Fourth Proportional to 30,215.46, 45,319.47 and 15,435.06

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Solution

The fourth proportional to 30,215.46, 45,319.47 and 15,435.06 is: 23,150.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,215.46 : 45,319.47 = 15,435.06 : x
  2. Step 2: Convert to fraction form
    30,215.46/45,319.47 = 15,435.06/x
  3. Step 3: Cross multiply
    30,215.46x = 45,319.47 × 15,435.06
  4. Step 4: Simplify right side
    30,215.46x = 699,508,738.62
  5. Step 5: Solve for x
    x = 699,508,738.62/30,215.46
  6. Step 6: Final answer
    x = 23,150.69

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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.