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Finding the Fourth Proportional to 14,368.80, 21,553.20 and 12,254.70

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Solution

The fourth proportional to 14,368.80, 21,553.20 and 12,254.70 is: 18,382.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,368.80 : 21,553.20 = 12,254.70 : x
  2. Step 2: Convert to fraction form
    14,368.80/21,553.20 = 12,254.70/x
  3. Step 3: Cross multiply
    14,368.80x = 21,553.20 × 12,254.70
  4. Step 4: Simplify right side
    14,368.80x = 264,128,000.04
  5. Step 5: Solve for x
    x = 264,128,000.04/14,368.80
  6. Step 6: Final answer
    x = 18,382.05

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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.