Home / 13,015.28-17,956.44-7,977.68

Finding the Fourth Proportional to 13,015.28, 17,956.44 and 7,977.68

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Solution

The fourth proportional to 13,015.28, 17,956.44 and 7,977.68 is: 11,006.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,015.28 : 17,956.44 = 7,977.68 : x
  2. Step 2: Convert to fraction form
    13,015.28/17,956.44 = 7,977.68/x
  3. Step 3: Cross multiply
    13,015.28x = 17,956.44 × 7,977.68
  4. Step 4: Simplify right side
    13,015.28x = 143,250,732.26
  5. Step 5: Solve for x
    x = 143,250,732.26/13,015.28
  6. Step 6: Final answer
    x = 11,006.35

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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.