Home / 31,346.40-47,035.77-20,823.69

Finding the Fourth Proportional to 31,346.40, 47,035.77 and 20,823.69

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Solution

The fourth proportional to 31,346.40, 47,035.77 and 20,823.69 is: 31,246.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,346.40 : 47,035.77 = 20,823.69 : x
  2. Step 2: Convert to fraction form
    31,346.40/47,035.77 = 20,823.69/x
  3. Step 3: Cross multiply
    31,346.40x = 47,035.77 × 20,823.69
  4. Step 4: Simplify right side
    31,346.40x = 979,458,293.39
  5. Step 5: Solve for x
    x = 979,458,293.39/31,346.40
  6. Step 6: Final answer
    x = 31,246.28

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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.