Home / 13,240.05-18,271.32-7,272.36

Finding the Fourth Proportional to 13,240.05, 18,271.32 and 7,272.36

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Solution

The fourth proportional to 13,240.05, 18,271.32 and 7,272.36 is: 10,035.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,240.05 : 18,271.32 = 7,272.36 : x
  2. Step 2: Convert to fraction form
    13,240.05/18,271.32 = 7,272.36/x
  3. Step 3: Cross multiply
    13,240.05x = 18,271.32 × 7,272.36
  4. Step 4: Simplify right side
    13,240.05x = 132,875,616.72
  5. Step 5: Solve for x
    x = 132,875,616.72/13,240.05
  6. Step 6: Final answer
    x = 10,035.88

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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.