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Finding the Fourth Proportional to 14,448.64, 19,939.28 and 8,480.42

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Solution

The fourth proportional to 14,448.64, 19,939.28 and 8,480.42 is: 11,703.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,448.64 : 19,939.28 = 8,480.42 : x
  2. Step 2: Convert to fraction form
    14,448.64/19,939.28 = 8,480.42/x
  3. Step 3: Cross multiply
    14,448.64x = 19,939.28 × 8,480.42
  4. Step 4: Simplify right side
    14,448.64x = 169,093,468.90
  5. Step 5: Solve for x
    x = 169,093,468.90/14,448.64
  6. Step 6: Final answer
    x = 11,703.07

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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.