Home / 30,285.91-45,318.15-17,811.81

Finding the Fourth Proportional to 30,285.91, 45,318.15 and 17,811.81

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Solution

The fourth proportional to 30,285.91, 45,318.15 and 17,811.81 is: 26,652.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,285.91 : 45,318.15 = 17,811.81 : x
  2. Step 2: Convert to fraction form
    30,285.91/45,318.15 = 17,811.81/x
  3. Step 3: Cross multiply
    30,285.91x = 45,318.15 × 17,811.81
  4. Step 4: Simplify right side
    30,285.91x = 807,198,277.35
  5. Step 5: Solve for x
    x = 807,198,277.35/30,285.91
  6. Step 6: Final answer
    x = 26,652.60

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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.