Home / 13,153.06-18,150.49-7,489.19

Finding the Fourth Proportional to 13,153.06, 18,150.49 and 7,489.19

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Solution

The fourth proportional to 13,153.06, 18,150.49 and 7,489.19 is: 10,334.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,153.06 : 18,150.49 = 7,489.19 : x
  2. Step 2: Convert to fraction form
    13,153.06/18,150.49 = 7,489.19/x
  3. Step 3: Cross multiply
    13,153.06x = 18,150.49 × 7,489.19
  4. Step 4: Simplify right side
    13,153.06x = 135,932,430.76
  5. Step 5: Solve for x
    x = 135,932,430.76/13,153.06
  6. Step 6: Final answer
    x = 10,334.66

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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.