Home / 18,405.86-27,624.54-7,320.36

Finding the Fourth Proportional to 18,405.86, 27,624.54 and 7,320.36

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Solution

The fourth proportional to 18,405.86, 27,624.54 and 7,320.36 is: 10,986.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,405.86 : 27,624.54 = 7,320.36 : x
  2. Step 2: Convert to fraction form
    18,405.86/27,624.54 = 7,320.36/x
  3. Step 3: Cross multiply
    18,405.86x = 27,624.54 × 7,320.36
  4. Step 4: Simplify right side
    18,405.86x = 202,221,577.63
  5. Step 5: Solve for x
    x = 202,221,577.63/18,405.86
  6. Step 6: Final answer
    x = 10,986.80

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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.