Home / 13,263.31-18,289.47-9,900.73

Finding the Fourth Proportional to 13,263.31, 18,289.47 and 9,900.73

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Solution

The fourth proportional to 13,263.31, 18,289.47 and 9,900.73 is: 13,652.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,263.31 : 18,289.47 = 9,900.73 : x
  2. Step 2: Convert to fraction form
    13,263.31/18,289.47 = 9,900.73/x
  3. Step 3: Cross multiply
    13,263.31x = 18,289.47 × 9,900.73
  4. Step 4: Simplify right side
    13,263.31x = 181,079,104.31
  5. Step 5: Solve for x
    x = 181,079,104.31/13,263.31
  6. Step 6: Final answer
    x = 13,652.63

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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.