Home / 31,943.70-47,915.55-13,221.16

Finding the Fourth Proportional to 31,943.70, 47,915.55 and 13,221.16

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Solution

The fourth proportional to 31,943.70, 47,915.55 and 13,221.16 is: 19,831.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,943.70 : 47,915.55 = 13,221.16 : x
  2. Step 2: Convert to fraction form
    31,943.70/47,915.55 = 13,221.16/x
  3. Step 3: Cross multiply
    31,943.70x = 47,915.55 × 13,221.16
  4. Step 4: Simplify right side
    31,943.70x = 633,499,033.25
  5. Step 5: Solve for x
    x = 633,499,033.25/31,943.70
  6. Step 6: Final answer
    x = 19,831.74

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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.