Home / 14,144.64-21,196.49-7,820.75

Finding the Fourth Proportional to 14,144.64, 21,196.49 and 7,820.75

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Solution

The fourth proportional to 14,144.64, 21,196.49 and 7,820.75 is: 11,719.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,144.64 : 21,196.49 = 7,820.75 : x
  2. Step 2: Convert to fraction form
    14,144.64/21,196.49 = 7,820.75/x
  3. Step 3: Cross multiply
    14,144.64x = 21,196.49 × 7,820.75
  4. Step 4: Simplify right side
    14,144.64x = 165,772,304.08
  5. Step 5: Solve for x
    x = 165,772,304.08/14,144.64
  6. Step 6: Final answer
    x = 11,719.80

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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.