Home / 13,239.42-18,271.38-8,204.63

Finding the Fourth Proportional to 13,239.42, 18,271.38 and 8,204.63

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Solution

The fourth proportional to 13,239.42, 18,271.38 and 8,204.63 is: 11,322.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,239.42 : 18,271.38 = 8,204.63 : x
  2. Step 2: Convert to fraction form
    13,239.42/18,271.38 = 8,204.63/x
  3. Step 3: Cross multiply
    13,239.42x = 18,271.38 × 8,204.63
  4. Step 4: Simplify right side
    13,239.42x = 149,909,821.13
  5. Step 5: Solve for x
    x = 149,909,821.13/13,239.42
  6. Step 6: Final answer
    x = 11,322.99

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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.