Home / 13,371.84-18,457.79-7,708.86

Finding the Fourth Proportional to 13,371.84, 18,457.79 and 7,708.86

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Solution

The fourth proportional to 13,371.84, 18,457.79 and 7,708.86 is: 10,640.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,371.84 : 18,457.79 = 7,708.86 : x
  2. Step 2: Convert to fraction form
    13,371.84/18,457.79 = 7,708.86/x
  3. Step 3: Cross multiply
    13,371.84x = 18,457.79 × 7,708.86
  4. Step 4: Simplify right side
    13,371.84x = 142,288,480.48
  5. Step 5: Solve for x
    x = 142,288,480.48/13,371.84
  6. Step 6: Final answer
    x = 10,640.91

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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.