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Finding the Fourth Proportional to 12,779.71, 19,160.89 and 6,534.61

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Solution

The fourth proportional to 12,779.71, 19,160.89 and 6,534.61 is: 9,797.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,779.71 : 19,160.89 = 6,534.61 : x
  2. Step 2: Convert to fraction form
    12,779.71/19,160.89 = 6,534.61/x
  3. Step 3: Cross multiply
    12,779.71x = 19,160.89 × 6,534.61
  4. Step 4: Simplify right side
    12,779.71x = 125,208,879.16
  5. Step 5: Solve for x
    x = 125,208,879.16/12,779.71
  6. Step 6: Final answer
    x = 9,797.48

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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.