Home / 30,385.32-45,581.76-12,850.74

Finding the Fourth Proportional to 30,385.32, 45,581.76 and 12,850.74

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Solution

The fourth proportional to 30,385.32, 45,581.76 and 12,850.74 is: 19,277.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,385.32 : 45,581.76 = 12,850.74 : x
  2. Step 2: Convert to fraction form
    30,385.32/45,581.76 = 12,850.74/x
  3. Step 3: Cross multiply
    30,385.32x = 45,581.76 × 12,850.74
  4. Step 4: Simplify right side
    30,385.32x = 585,759,346.50
  5. Step 5: Solve for x
    x = 585,759,346.50/30,385.32
  6. Step 6: Final answer
    x = 19,277.71

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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.