Home / 19,856.74-27,430.77-15,872.62

Finding the Fourth Proportional to 19,856.74, 27,430.77 and 15,872.62

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Solution

The fourth proportional to 19,856.74, 27,430.77 and 15,872.62 is: 21,926.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,856.74 : 27,430.77 = 15,872.62 : x
  2. Step 2: Convert to fraction form
    19,856.74/27,430.77 = 15,872.62/x
  3. Step 3: Cross multiply
    19,856.74x = 27,430.77 × 15,872.62
  4. Step 4: Simplify right side
    19,856.74x = 435,398,188.52
  5. Step 5: Solve for x
    x = 435,398,188.52/19,856.74
  6. Step 6: Final answer
    x = 21,926.97

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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.