Home / 31,474.59-47,258.42-21,009.81

Finding the Fourth Proportional to 31,474.59, 47,258.42 and 21,009.81

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Solution

The fourth proportional to 31,474.59, 47,258.42 and 21,009.81 is: 31,545.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,474.59 : 47,258.42 = 21,009.81 : x
  2. Step 2: Convert to fraction form
    31,474.59/47,258.42 = 21,009.81/x
  3. Step 3: Cross multiply
    31,474.59x = 47,258.42 × 21,009.81
  4. Step 4: Simplify right side
    31,474.59x = 992,890,320.05
  5. Step 5: Solve for x
    x = 992,890,320.05/31,474.59
  6. Step 6: Final answer
    x = 31,545.77

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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.