Home / 13,384.59-18,470.43-7,719.35

Finding the Fourth Proportional to 13,384.59, 18,470.43 and 7,719.35

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Solution

The fourth proportional to 13,384.59, 18,470.43 and 7,719.35 is: 10,652.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,384.59 : 18,470.43 = 7,719.35 : x
  2. Step 2: Convert to fraction form
    13,384.59/18,470.43 = 7,719.35/x
  3. Step 3: Cross multiply
    13,384.59x = 18,470.43 × 7,719.35
  4. Step 4: Simplify right side
    13,384.59x = 142,579,725.36
  5. Step 5: Solve for x
    x = 142,579,725.36/13,384.59
  6. Step 6: Final answer
    x = 10,652.53

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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.