Home / 13,900.93-19,181.84-7,931.44

Finding the Fourth Proportional to 13,900.93, 19,181.84 and 7,931.44

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Solution

The fourth proportional to 13,900.93, 19,181.84 and 7,931.44 is: 10,944.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,900.93 : 19,181.84 = 7,931.44 : x
  2. Step 2: Convert to fraction form
    13,900.93/19,181.84 = 7,931.44/x
  3. Step 3: Cross multiply
    13,900.93x = 19,181.84 × 7,931.44
  4. Step 4: Simplify right side
    13,900.93x = 152,139,525.44
  5. Step 5: Solve for x
    x = 152,139,525.44/13,900.93
  6. Step 6: Final answer
    x = 10,944.56

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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.