Home / 19,779.17-29,679.73-8,100.59

Finding the Fourth Proportional to 19,779.17, 29,679.73 and 8,100.59

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Solution

The fourth proportional to 19,779.17, 29,679.73 and 8,100.59 is: 12,155.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,779.17 : 29,679.73 = 8,100.59 : x
  2. Step 2: Convert to fraction form
    19,779.17/29,679.73 = 8,100.59/x
  3. Step 3: Cross multiply
    19,779.17x = 29,679.73 × 8,100.59
  4. Step 4: Simplify right side
    19,779.17x = 240,423,377.99
  5. Step 5: Solve for x
    x = 240,423,377.99/19,779.17
  6. Step 6: Final answer
    x = 12,155.38

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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.