Home / 31,936.98-47,856.19-20,225.60

Finding the Fourth Proportional to 31,936.98, 47,856.19 and 20,225.60

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Solution

The fourth proportional to 31,936.98, 47,856.19 and 20,225.60 is: 30,307.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,936.98 : 47,856.19 = 20,225.60 : x
  2. Step 2: Convert to fraction form
    31,936.98/47,856.19 = 20,225.60/x
  3. Step 3: Cross multiply
    31,936.98x = 47,856.19 × 20,225.60
  4. Step 4: Simplify right side
    31,936.98x = 967,920,156.46
  5. Step 5: Solve for x
    x = 967,920,156.46/31,936.98
  6. Step 6: Final answer
    x = 30,307.19

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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.