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Finding the Fourth Proportional to 14,269.64, 19,691.80 and 7,896.80

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Solution

The fourth proportional to 14,269.64, 19,691.80 and 7,896.80 is: 10,897.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,269.64 : 19,691.80 = 7,896.80 : x
  2. Step 2: Convert to fraction form
    14,269.64/19,691.80 = 7,896.80/x
  3. Step 3: Cross multiply
    14,269.64x = 19,691.80 × 7,896.80
  4. Step 4: Simplify right side
    14,269.64x = 155,502,206.24
  5. Step 5: Solve for x
    x = 155,502,206.24/14,269.64
  6. Step 6: Final answer
    x = 10,897.42

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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.