Home / 13,225.81-18,251.56-7,257.57

Finding the Fourth Proportional to 13,225.81, 18,251.56 and 7,257.57

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Solution

The fourth proportional to 13,225.81, 18,251.56 and 7,257.57 is: 10,015.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,225.81 : 18,251.56 = 7,257.57 : x
  2. Step 2: Convert to fraction form
    13,225.81/18,251.56 = 7,257.57/x
  3. Step 3: Cross multiply
    13,225.81x = 18,251.56 × 7,257.57
  4. Step 4: Simplify right side
    13,225.81x = 132,462,051.82
  5. Step 5: Solve for x
    x = 132,462,051.82/13,225.81
  6. Step 6: Final answer
    x = 10,015.42

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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.