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Finding the Fourth Proportional to 19,969.94, 29,951.88 and 12,551.76

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Solution

The fourth proportional to 19,969.94, 29,951.88 and 12,551.76 is: 18,825.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,969.94 : 29,951.88 = 12,551.76 : x
  2. Step 2: Convert to fraction form
    19,969.94/29,951.88 = 12,551.76/x
  3. Step 3: Cross multiply
    19,969.94x = 29,951.88 × 12,551.76
  4. Step 4: Simplify right side
    19,969.94x = 375,948,762.24
  5. Step 5: Solve for x
    x = 375,948,762.24/19,969.94
  6. Step 6: Final answer
    x = 18,825.73

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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.