Home / 19,719.71-29,579.64-4,928.64

Finding the Fourth Proportional to 19,719.71, 29,579.64 and 4,928.64

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Solution

The fourth proportional to 19,719.71, 29,579.64 and 4,928.64 is: 7,392.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,719.71 : 29,579.64 = 4,928.64 : x
  2. Step 2: Convert to fraction form
    19,719.71/29,579.64 = 4,928.64/x
  3. Step 3: Cross multiply
    19,719.71x = 29,579.64 × 4,928.64
  4. Step 4: Simplify right side
    19,719.71x = 145,787,470.84
  5. Step 5: Solve for x
    x = 145,787,470.84/19,719.71
  6. Step 6: Final answer
    x = 7,392.98

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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.