Home / 31,911.20-47,868.60-9,725.30

Finding the Fourth Proportional to 31,911.20, 47,868.60 and 9,725.30

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Solution

The fourth proportional to 31,911.20, 47,868.60 and 9,725.30 is: 14,588.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,911.20 : 47,868.60 = 9,725.30 : x
  2. Step 2: Convert to fraction form
    31,911.20/47,868.60 = 9,725.30/x
  3. Step 3: Cross multiply
    31,911.20x = 47,868.60 × 9,725.30
  4. Step 4: Simplify right side
    31,911.20x = 465,536,495.58
  5. Step 5: Solve for x
    x = 465,536,495.58/31,911.20
  6. Step 6: Final answer
    x = 14,588.50

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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.