Home / 14,003.15-21,006.77-5,118.91

Finding the Fourth Proportional to 14,003.15, 21,006.77 and 5,118.91

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Solution

The fourth proportional to 14,003.15, 21,006.77 and 5,118.91 is: 7,679.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,003.15 : 21,006.77 = 5,118.91 : x
  2. Step 2: Convert to fraction form
    14,003.15/21,006.77 = 5,118.91/x
  3. Step 3: Cross multiply
    14,003.15x = 21,006.77 × 5,118.91
  4. Step 4: Simplify right side
    14,003.15x = 107,531,686.91
  5. Step 5: Solve for x
    x = 107,531,686.91/14,003.15
  6. Step 6: Final answer
    x = 7,679.11

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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.