Home / 18,211.52-27,309.64-7,686.28

Finding the Fourth Proportional to 18,211.52, 27,309.64 and 7,686.28

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Solution

The fourth proportional to 18,211.52, 27,309.64 and 7,686.28 is: 11,526.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,211.52 : 27,309.64 = 7,686.28 : x
  2. Step 2: Convert to fraction form
    18,211.52/27,309.64 = 7,686.28/x
  3. Step 3: Cross multiply
    18,211.52x = 27,309.64 × 7,686.28
  4. Step 4: Simplify right side
    18,211.52x = 209,909,539.74
  5. Step 5: Solve for x
    x = 209,909,539.74/18,211.52
  6. Step 6: Final answer
    x = 11,526.20

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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.