Home / 12,538.21-18,777.40-7,262.07

Finding the Fourth Proportional to 12,538.21, 18,777.40 and 7,262.07

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Solution

The fourth proportional to 12,538.21, 18,777.40 and 7,262.07 is: 10,875.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,538.21 : 18,777.40 = 7,262.07 : x
  2. Step 2: Convert to fraction form
    12,538.21/18,777.40 = 7,262.07/x
  3. Step 3: Cross multiply
    12,538.21x = 18,777.40 × 7,262.07
  4. Step 4: Simplify right side
    12,538.21x = 136,362,699.33
  5. Step 5: Solve for x
    x = 136,362,699.33/12,538.21
  6. Step 6: Final answer
    x = 10,875.78

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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.