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Finding the Fourth Proportional to 14,274.60, 21,411.90 and 14,055.90

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Solution

The fourth proportional to 14,274.60, 21,411.90 and 14,055.90 is: 21,083.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,274.60 : 21,411.90 = 14,055.90 : x
  2. Step 2: Convert to fraction form
    14,274.60/21,411.90 = 14,055.90/x
  3. Step 3: Cross multiply
    14,274.60x = 21,411.90 × 14,055.90
  4. Step 4: Simplify right side
    14,274.60x = 300,963,525.21
  5. Step 5: Solve for x
    x = 300,963,525.21/14,274.60
  6. Step 6: Final answer
    x = 21,083.85

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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.