Home / 13,158.84-18,158.44-7,190.56

Finding the Fourth Proportional to 13,158.84, 18,158.44 and 7,190.56

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Solution

The fourth proportional to 13,158.84, 18,158.44 and 7,190.56 is: 9,922.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,158.84 : 18,158.44 = 7,190.56 : x
  2. Step 2: Convert to fraction form
    13,158.84/18,158.44 = 7,190.56/x
  3. Step 3: Cross multiply
    13,158.84x = 18,158.44 × 7,190.56
  4. Step 4: Simplify right side
    13,158.84x = 130,569,352.33
  5. Step 5: Solve for x
    x = 130,569,352.33/13,158.84
  6. Step 6: Final answer
    x = 9,922.56

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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.