Home / 31,505.97-47,258.47-12,785.92

Finding the Fourth Proportional to 31,505.97, 47,258.47 and 12,785.92

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Solution

The fourth proportional to 31,505.97, 47,258.47 and 12,785.92 is: 19,178.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,505.97 : 47,258.47 = 12,785.92 : x
  2. Step 2: Convert to fraction form
    31,505.97/47,258.47 = 12,785.92/x
  3. Step 3: Cross multiply
    31,505.97x = 47,258.47 × 12,785.92
  4. Step 4: Simplify right side
    31,505.97x = 604,243,016.74
  5. Step 5: Solve for x
    x = 604,243,016.74/31,505.97
  6. Step 6: Final answer
    x = 19,178.68

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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.