Home / 13,239.99-18,271.48-7,271.68

Finding the Fourth Proportional to 13,239.99, 18,271.48 and 7,271.68

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Solution

The fourth proportional to 13,239.99, 18,271.48 and 7,271.68 is: 10,035.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,239.99 : 18,271.48 = 7,271.68 : x
  2. Step 2: Convert to fraction form
    13,239.99/18,271.48 = 7,271.68/x
  3. Step 3: Cross multiply
    13,239.99x = 18,271.48 × 7,271.68
  4. Step 4: Simplify right side
    13,239.99x = 132,864,355.69
  5. Step 5: Solve for x
    x = 132,864,355.69/13,239.99
  6. Step 6: Final answer
    x = 10,035.08

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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.