Home / 28,215.74-38,924.15-18,659.36

Finding the Fourth Proportional to 28,215.74, 38,924.15 and 18,659.36

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Solution

The fourth proportional to 28,215.74, 38,924.15 and 18,659.36 is: 25,740.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,215.74 : 38,924.15 = 18,659.36 : x
  2. Step 2: Convert to fraction form
    28,215.74/38,924.15 = 18,659.36/x
  3. Step 3: Cross multiply
    28,215.74x = 38,924.15 × 18,659.36
  4. Step 4: Simplify right side
    28,215.74x = 726,299,731.56
  5. Step 5: Solve for x
    x = 726,299,731.56/28,215.74
  6. Step 6: Final answer
    x = 25,740.94

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.