Home / 13,384.92-18,470.80-7,335.09

Finding the Fourth Proportional to 13,384.92, 18,470.80 and 7,335.09

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Solution

The fourth proportional to 13,384.92, 18,470.80 and 7,335.09 is: 10,122.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,384.92 : 18,470.80 = 7,335.09 : x
  2. Step 2: Convert to fraction form
    13,384.92/18,470.80 = 7,335.09/x
  3. Step 3: Cross multiply
    13,384.92x = 18,470.80 × 7,335.09
  4. Step 4: Simplify right side
    13,384.92x = 135,484,995.69
  5. Step 5: Solve for x
    x = 135,484,995.69/13,384.92
  6. Step 6: Final answer
    x = 10,122.21

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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.