Home / 13,206.36-18,223.74-7,616.28

Finding the Fourth Proportional to 13,206.36, 18,223.74 and 7,616.28

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Solution

The fourth proportional to 13,206.36, 18,223.74 and 7,616.28 is: 10,509.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,206.36 : 18,223.74 = 7,616.28 : x
  2. Step 2: Convert to fraction form
    13,206.36/18,223.74 = 7,616.28/x
  3. Step 3: Cross multiply
    13,206.36x = 18,223.74 × 7,616.28
  4. Step 4: Simplify right side
    13,206.36x = 138,797,106.49
  5. Step 5: Solve for x
    x = 138,797,106.49/13,206.36
  6. Step 6: Final answer
    x = 10,509.87

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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.