Home / 31,330.80-47,009.70-18,194.40

Finding the Fourth Proportional to 31,330.80, 47,009.70 and 18,194.40

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Solution

The fourth proportional to 31,330.80, 47,009.70 and 18,194.40 is: 27,299.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,330.80 : 47,009.70 = 18,194.40 : x
  2. Step 2: Convert to fraction form
    31,330.80/47,009.70 = 18,194.40/x
  3. Step 3: Cross multiply
    31,330.80x = 47,009.70 × 18,194.40
  4. Step 4: Simplify right side
    31,330.80x = 855,313,285.68
  5. Step 5: Solve for x
    x = 855,313,285.68/31,330.80
  6. Step 6: Final answer
    x = 27,299.44

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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.