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Finding the Fourth Proportional to 19,779.62, 27,296.03 and 10,827.20

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Solution

The fourth proportional to 19,779.62, 27,296.03 and 10,827.20 is: 14,941.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,779.62 : 27,296.03 = 10,827.20 : x
  2. Step 2: Convert to fraction form
    19,779.62/27,296.03 = 10,827.20/x
  3. Step 3: Cross multiply
    19,779.62x = 27,296.03 × 10,827.20
  4. Step 4: Simplify right side
    19,779.62x = 295,539,385.40
  5. Step 5: Solve for x
    x = 295,539,385.40/19,779.62
  6. Step 6: Final answer
    x = 14,941.61

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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.