Home / 18,491.37-25,518.10-9,993.47

Finding the Fourth Proportional to 18,491.37, 25,518.10 and 9,993.47

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Solution

The fourth proportional to 18,491.37, 25,518.10 and 9,993.47 is: 13,790.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,491.37 : 25,518.10 = 9,993.47 : x
  2. Step 2: Convert to fraction form
    18,491.37/25,518.10 = 9,993.47/x
  3. Step 3: Cross multiply
    18,491.37x = 25,518.10 × 9,993.47
  4. Step 4: Simplify right side
    18,491.37x = 255,014,214.23
  5. Step 5: Solve for x
    x = 255,014,214.23/18,491.37
  6. Step 6: Final answer
    x = 13,790.99

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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.