Home / 12,779.52-19,137.16-8,085.36

Finding the Fourth Proportional to 12,779.52, 19,137.16 and 8,085.36

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Solution

The fourth proportional to 12,779.52, 19,137.16 and 8,085.36 is: 12,107.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,779.52 : 19,137.16 = 8,085.36 : x
  2. Step 2: Convert to fraction form
    12,779.52/19,137.16 = 8,085.36/x
  3. Step 3: Cross multiply
    12,779.52x = 19,137.16 × 8,085.36
  4. Step 4: Simplify right side
    12,779.52x = 154,730,827.98
  5. Step 5: Solve for x
    x = 154,730,827.98/12,779.52
  6. Step 6: Final answer
    x = 12,107.72

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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.