Home / 13,351.40-18,424.80-7,383.20

Finding the Fourth Proportional to 13,351.40, 18,424.80 and 7,383.20

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Solution

The fourth proportional to 13,351.40, 18,424.80 and 7,383.20 is: 10,188.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,351.40 : 18,424.80 = 7,383.20 : x
  2. Step 2: Convert to fraction form
    13,351.40/18,424.80 = 7,383.20/x
  3. Step 3: Cross multiply
    13,351.40x = 18,424.80 × 7,383.20
  4. Step 4: Simplify right side
    13,351.40x = 136,033,983.36
  5. Step 5: Solve for x
    x = 136,033,983.36/13,351.40
  6. Step 6: Final answer
    x = 10,188.74

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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.