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Finding the Fourth Proportional to 14,390.64, 19,858.88 and 8,103.04

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Solution

The fourth proportional to 14,390.64, 19,858.88 and 8,103.04 is: 11,182.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,390.64 : 19,858.88 = 8,103.04 : x
  2. Step 2: Convert to fraction form
    14,390.64/19,858.88 = 8,103.04/x
  3. Step 3: Cross multiply
    14,390.64x = 19,858.88 × 8,103.04
  4. Step 4: Simplify right side
    14,390.64x = 160,917,299.00
  5. Step 5: Solve for x
    x = 160,917,299.00/14,390.64
  6. Step 6: Final answer
    x = 11,182.08

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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.