Home / 13,239.96-18,271.13-7,272.01

Finding the Fourth Proportional to 13,239.96, 18,271.13 and 7,272.01

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Solution

The fourth proportional to 13,239.96, 18,271.13 and 7,272.01 is: 10,035.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,239.96 : 18,271.13 = 7,272.01 : x
  2. Step 2: Convert to fraction form
    13,239.96/18,271.13 = 7,272.01/x
  3. Step 3: Cross multiply
    13,239.96x = 18,271.13 × 7,272.01
  4. Step 4: Simplify right side
    13,239.96x = 132,867,812.57
  5. Step 5: Solve for x
    x = 132,867,812.57/13,239.96
  6. Step 6: Final answer
    x = 10,035.36

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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.