Home / 20,643.48-30,942.54-13,519.08

Finding the Fourth Proportional to 20,643.48, 30,942.54 and 13,519.08

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Solution

The fourth proportional to 20,643.48, 30,942.54 and 13,519.08 is: 20,263.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,643.48 : 30,942.54 = 13,519.08 : x
  2. Step 2: Convert to fraction form
    20,643.48/30,942.54 = 13,519.08/x
  3. Step 3: Cross multiply
    20,643.48x = 30,942.54 × 13,519.08
  4. Step 4: Simplify right side
    20,643.48x = 418,314,673.66
  5. Step 5: Solve for x
    x = 418,314,673.66/20,643.48
  6. Step 6: Final answer
    x = 20,263.77

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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.