Home / 25,519.19-38,196.88-13,643.28

Finding the Fourth Proportional to 25,519.19, 38,196.88 and 13,643.28

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Solution

The fourth proportional to 25,519.19, 38,196.88 and 13,643.28 is: 20,421.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    25,519.19 : 38,196.88 = 13,643.28 : x
  2. Step 2: Convert to fraction form
    25,519.19/38,196.88 = 13,643.28/x
  3. Step 3: Cross multiply
    25,519.19x = 38,196.88 × 13,643.28
  4. Step 4: Simplify right side
    25,519.19x = 521,130,694.86
  5. Step 5: Solve for x
    x = 521,130,694.86/25,519.19
  6. Step 6: Final answer
    x = 20,421.13

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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.