Home / 14,279.40-21,415.80-5,395.68

Finding the Fourth Proportional to 14,279.40, 21,415.80 and 5,395.68

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Solution

The fourth proportional to 14,279.40, 21,415.80 and 5,395.68 is: 8,092.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,279.40 : 21,415.80 = 5,395.68 : x
  2. Step 2: Convert to fraction form
    14,279.40/21,415.80 = 5,395.68/x
  3. Step 3: Cross multiply
    14,279.40x = 21,415.80 × 5,395.68
  4. Step 4: Simplify right side
    14,279.40x = 115,552,823.98
  5. Step 5: Solve for x
    x = 115,552,823.98/14,279.40
  6. Step 6: Final answer
    x = 8,092.27

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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.