Home / 21,068.94-31,607.97-6,279.05

Finding the Fourth Proportional to 21,068.94, 31,607.97 and 6,279.05

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Solution

The fourth proportional to 21,068.94, 31,607.97 and 6,279.05 is: 9,419.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,068.94 : 31,607.97 = 6,279.05 : x
  2. Step 2: Convert to fraction form
    21,068.94/31,607.97 = 6,279.05/x
  3. Step 3: Cross multiply
    21,068.94x = 31,607.97 × 6,279.05
  4. Step 4: Simplify right side
    21,068.94x = 198,467,865.99
  5. Step 5: Solve for x
    x = 198,467,865.99/21,068.94
  6. Step 6: Final answer
    x = 9,419.93

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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.