Home / 31,845.53-47,766.56-13,125.21

Finding the Fourth Proportional to 31,845.53, 47,766.56 and 13,125.21

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Solution

The fourth proportional to 31,845.53, 47,766.56 and 13,125.21 is: 19,687.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,845.53 : 47,766.56 = 13,125.21 : x
  2. Step 2: Convert to fraction form
    31,845.53/47,766.56 = 13,125.21/x
  3. Step 3: Cross multiply
    31,845.53x = 47,766.56 × 13,125.21
  4. Step 4: Simplify right side
    31,845.53x = 626,946,065.35
  5. Step 5: Solve for x
    x = 626,946,065.35/31,845.53
  6. Step 6: Final answer
    x = 19,687.10

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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.