Home / 14,290.15-19,721.15-7,917.44

Finding the Fourth Proportional to 14,290.15, 19,721.15 and 7,917.44

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Solution

The fourth proportional to 14,290.15, 19,721.15 and 7,917.44 is: 10,926.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,290.15 : 19,721.15 = 7,917.44 : x
  2. Step 2: Convert to fraction form
    14,290.15/19,721.15 = 7,917.44/x
  3. Step 3: Cross multiply
    14,290.15x = 19,721.15 × 7,917.44
  4. Step 4: Simplify right side
    14,290.15x = 156,141,021.86
  5. Step 5: Solve for x
    x = 156,141,021.86/14,290.15
  6. Step 6: Final answer
    x = 10,926.48

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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.