Home / 19,909.28-29,856.80-6,579.81

Finding the Fourth Proportional to 19,909.28, 29,856.80 and 6,579.81

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Solution

The fourth proportional to 19,909.28, 29,856.80 and 6,579.81 is: 9,867.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,909.28 : 29,856.80 = 6,579.81 : x
  2. Step 2: Convert to fraction form
    19,909.28/29,856.80 = 6,579.81/x
  3. Step 3: Cross multiply
    19,909.28x = 29,856.80 × 6,579.81
  4. Step 4: Simplify right side
    19,909.28x = 196,452,071.21
  5. Step 5: Solve for x
    x = 196,452,071.21/19,909.28
  6. Step 6: Final answer
    x = 9,867.36

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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.