Home / 25,767.78-38,619.30-13,921.08

Finding the Fourth Proportional to 25,767.78, 38,619.30 and 13,921.08

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Solution

The fourth proportional to 25,767.78, 38,619.30 and 13,921.08 is: 20,864.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    25,767.78 : 38,619.30 = 13,921.08 : x
  2. Step 2: Convert to fraction form
    25,767.78/38,619.30 = 13,921.08/x
  3. Step 3: Cross multiply
    25,767.78x = 38,619.30 × 13,921.08
  4. Step 4: Simplify right side
    25,767.78x = 537,622,364.84
  5. Step 5: Solve for x
    x = 537,622,364.84/25,767.78
  6. Step 6: Final answer
    x = 20,864.13

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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.