Home / 31,831.52-47,743.60-8,459.84

Finding the Fourth Proportional to 31,831.52, 47,743.60 and 8,459.84

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Solution

The fourth proportional to 31,831.52, 47,743.60 and 8,459.84 is: 12,688.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,831.52 : 47,743.60 = 8,459.84 : x
  2. Step 2: Convert to fraction form
    31,831.52/47,743.60 = 8,459.84/x
  3. Step 3: Cross multiply
    31,831.52x = 47,743.60 × 8,459.84
  4. Step 4: Simplify right side
    31,831.52x = 403,903,217.02
  5. Step 5: Solve for x
    x = 403,903,217.02/31,831.52
  6. Step 6: Final answer
    x = 12,688.78

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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.