Home / 26,520.88-39,779.52-19,138.72

Finding the Fourth Proportional to 26,520.88, 39,779.52 and 19,138.72

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Solution

The fourth proportional to 26,520.88, 39,779.52 and 19,138.72 is: 28,706.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    26,520.88 : 39,779.52 = 19,138.72 : x
  2. Step 2: Convert to fraction form
    26,520.88/39,779.52 = 19,138.72/x
  3. Step 3: Cross multiply
    26,520.88x = 39,779.52 × 19,138.72
  4. Step 4: Simplify right side
    26,520.88x = 761,329,095.01
  5. Step 5: Solve for x
    x = 761,329,095.01/26,520.88
  6. Step 6: Final answer
    x = 28,706.78

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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.