Home / 13,208.87-18,228.70-7,240.53

Finding the Fourth Proportional to 13,208.87, 18,228.70 and 7,240.53

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Solution

The fourth proportional to 13,208.87, 18,228.70 and 7,240.53 is: 9,992.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,208.87 : 18,228.70 = 7,240.53 : x
  2. Step 2: Convert to fraction form
    13,208.87/18,228.70 = 7,240.53/x
  3. Step 3: Cross multiply
    13,208.87x = 18,228.70 × 7,240.53
  4. Step 4: Simplify right side
    13,208.87x = 131,985,526.62
  5. Step 5: Solve for x
    x = 131,985,526.62/13,208.87
  6. Step 6: Final answer
    x = 9,992.19

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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.