Home / 13,240.21-18,271.52-7,272.27

Finding the Fourth Proportional to 13,240.21, 18,271.52 and 7,272.27

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Solution

The fourth proportional to 13,240.21, 18,271.52 and 7,272.27 is: 10,035.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,240.21 : 18,271.52 = 7,272.27 : x
  2. Step 2: Convert to fraction form
    13,240.21/18,271.52 = 7,272.27/x
  3. Step 3: Cross multiply
    13,240.21x = 18,271.52 × 7,272.27
  4. Step 4: Simplify right side
    13,240.21x = 132,875,426.75
  5. Step 5: Solve for x
    x = 132,875,426.75/13,240.21
  6. Step 6: Final answer
    x = 10,035.75

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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.