Home / 31,487.16-47,235.06-13,956.60

Finding the Fourth Proportional to 31,487.16, 47,235.06 and 13,956.60

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Solution

The fourth proportional to 31,487.16, 47,235.06 and 13,956.60 is: 20,936.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,487.16 : 47,235.06 = 13,956.60 : x
  2. Step 2: Convert to fraction form
    31,487.16/47,235.06 = 13,956.60/x
  3. Step 3: Cross multiply
    31,487.16x = 47,235.06 × 13,956.60
  4. Step 4: Simplify right side
    31,487.16x = 659,240,838.40
  5. Step 5: Solve for x
    x = 659,240,838.40/31,487.16
  6. Step 6: Final answer
    x = 20,936.81

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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.