Home / 12,195.55-18,271.45-11,539.45

Finding the Fourth Proportional to 12,195.55, 18,271.45 and 11,539.45

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Solution

The fourth proportional to 12,195.55, 18,271.45 and 11,539.45 is: 17,288.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,195.55 : 18,271.45 = 11,539.45 : x
  2. Step 2: Convert to fraction form
    12,195.55/18,271.45 = 11,539.45/x
  3. Step 3: Cross multiply
    12,195.55x = 18,271.45 × 11,539.45
  4. Step 4: Simplify right side
    12,195.55x = 210,842,483.70
  5. Step 5: Solve for x
    x = 210,842,483.70/12,195.55
  6. Step 6: Final answer
    x = 17,288.48

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.