Home / 14,387.84-19,857.60-8,100.80

Finding the Fourth Proportional to 14,387.84, 19,857.60 and 8,100.80

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Solution

The fourth proportional to 14,387.84, 19,857.60 and 8,100.80 is: 11,180.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,387.84 : 19,857.60 = 8,100.80 : x
  2. Step 2: Convert to fraction form
    14,387.84/19,857.60 = 8,100.80/x
  3. Step 3: Cross multiply
    14,387.84x = 19,857.60 × 8,100.80
  4. Step 4: Simplify right side
    14,387.84x = 160,862,446.08
  5. Step 5: Solve for x
    x = 160,862,446.08/14,387.84
  6. Step 6: Final answer
    x = 11,180.44

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.