Home / 13,015.40-17,956.82-7,349.48

Finding the Fourth Proportional to 13,015.40, 17,956.82 and 7,349.48

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Solution

The fourth proportional to 13,015.40, 17,956.82 and 7,349.48 is: 10,139.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,015.40 : 17,956.82 = 7,349.48 : x
  2. Step 2: Convert to fraction form
    13,015.40/17,956.82 = 7,349.48/x
  3. Step 3: Cross multiply
    13,015.40x = 17,956.82 × 7,349.48
  4. Step 4: Simplify right side
    13,015.40x = 131,973,289.45
  5. Step 5: Solve for x
    x = 131,973,289.45/13,015.40
  6. Step 6: Final answer
    x = 10,139.78

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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.