Home / 25,984.72-38,799.86-20,659.78

Finding the Fourth Proportional to 25,984.72, 38,799.86 and 20,659.78

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Solution

The fourth proportional to 25,984.72, 38,799.86 and 20,659.78 is: 30,848.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    25,984.72 : 38,799.86 = 20,659.78 : x
  2. Step 2: Convert to fraction form
    25,984.72/38,799.86 = 20,659.78/x
  3. Step 3: Cross multiply
    25,984.72x = 38,799.86 × 20,659.78
  4. Step 4: Simplify right side
    25,984.72x = 801,596,571.63
  5. Step 5: Solve for x
    x = 801,596,571.63/25,984.72
  6. Step 6: Final answer
    x = 30,848.77

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.