Home / 19,400.80-29,077.68-13,824.16

Finding the Fourth Proportional to 19,400.80, 29,077.68 and 13,824.16

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Solution

The fourth proportional to 19,400.80, 29,077.68 and 13,824.16 is: 20,719.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,400.80 : 29,077.68 = 13,824.16 : x
  2. Step 2: Convert to fraction form
    19,400.80/29,077.68 = 13,824.16/x
  3. Step 3: Cross multiply
    19,400.80x = 29,077.68 × 13,824.16
  4. Step 4: Simplify right side
    19,400.80x = 401,974,500.75
  5. Step 5: Solve for x
    x = 401,974,500.75/19,400.80
  6. Step 6: Final answer
    x = 20,719.48

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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.