Home / 31,678.56-47,528.40-10,620.68

Finding the Fourth Proportional to 31,678.56, 47,528.40 and 10,620.68

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Solution

The fourth proportional to 31,678.56, 47,528.40 and 10,620.68 is: 15,934.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,678.56 : 47,528.40 = 10,620.68 : x
  2. Step 2: Convert to fraction form
    31,678.56/47,528.40 = 10,620.68/x
  3. Step 3: Cross multiply
    31,678.56x = 47,528.40 × 10,620.68
  4. Step 4: Simplify right side
    31,678.56x = 504,783,874.21
  5. Step 5: Solve for x
    x = 504,783,874.21/31,678.56
  6. Step 6: Final answer
    x = 15,934.56

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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.