Home / 31,105.20-46,657.80-18,663.60

Finding the Fourth Proportional to 31,105.20, 46,657.80 and 18,663.60

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Solution

The fourth proportional to 31,105.20, 46,657.80 and 18,663.60 is: 27,995.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,105.20 : 46,657.80 = 18,663.60 : x
  2. Step 2: Convert to fraction form
    31,105.20/46,657.80 = 18,663.60/x
  3. Step 3: Cross multiply
    31,105.20x = 46,657.80 × 18,663.60
  4. Step 4: Simplify right side
    31,105.20x = 870,802,516.08
  5. Step 5: Solve for x
    x = 870,802,516.08/31,105.20
  6. Step 6: Final answer
    x = 27,995.40

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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.