Home / 13,417.35-18,512.20-8,386.69

Finding the Fourth Proportional to 13,417.35, 18,512.20 and 8,386.69

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Solution

The fourth proportional to 13,417.35, 18,512.20 and 8,386.69 is: 11,571.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,417.35 : 18,512.20 = 8,386.69 : x
  2. Step 2: Convert to fraction form
    13,417.35/18,512.20 = 8,386.69/x
  3. Step 3: Cross multiply
    13,417.35x = 18,512.20 × 8,386.69
  4. Step 4: Simplify right side
    13,417.35x = 155,256,034.36
  5. Step 5: Solve for x
    x = 155,256,034.36/13,417.35
  6. Step 6: Final answer
    x = 11,571.29

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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.