Home / 31,930.80-47,831.40-18,063.60

Finding the Fourth Proportional to 31,930.80, 47,831.40 and 18,063.60

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Solution

The fourth proportional to 31,930.80, 47,831.40 and 18,063.60 is: 27,058.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,930.80 : 47,831.40 = 18,063.60 : x
  2. Step 2: Convert to fraction form
    31,930.80/47,831.40 = 18,063.60/x
  3. Step 3: Cross multiply
    31,930.80x = 47,831.40 × 18,063.60
  4. Step 4: Simplify right side
    31,930.80x = 864,007,277.04
  5. Step 5: Solve for x
    x = 864,007,277.04/31,930.80
  6. Step 6: Final answer
    x = 27,058.74

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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.