Home / 31,722.75-47,586.36-12,747.40

Finding the Fourth Proportional to 31,722.75, 47,586.36 and 12,747.40

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Solution

The fourth proportional to 31,722.75, 47,586.36 and 12,747.40 is: 19,122.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,722.75 : 47,586.36 = 12,747.40 : x
  2. Step 2: Convert to fraction form
    31,722.75/47,586.36 = 12,747.40/x
  3. Step 3: Cross multiply
    31,722.75x = 47,586.36 × 12,747.40
  4. Step 4: Simplify right side
    31,722.75x = 606,602,365.46
  5. Step 5: Solve for x
    x = 606,602,365.46/31,722.75
  6. Step 6: Final answer
    x = 19,122.00

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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.