Home / 13,900.75-19,181.58-7,931.25

Finding the Fourth Proportional to 13,900.75, 19,181.58 and 7,931.25

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Solution

The fourth proportional to 13,900.75, 19,181.58 and 7,931.25 is: 10,944.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,900.75 : 19,181.58 = 7,931.25 : x
  2. Step 2: Convert to fraction form
    13,900.75/19,181.58 = 7,931.25/x
  3. Step 3: Cross multiply
    13,900.75x = 19,181.58 × 7,931.25
  4. Step 4: Simplify right side
    13,900.75x = 152,133,876.63
  5. Step 5: Solve for x
    x = 152,133,876.63/13,900.75
  6. Step 6: Final answer
    x = 10,944.29

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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.