Home / 13,440.36-20,155.76-5,118.17

Finding the Fourth Proportional to 13,440.36, 20,155.76 and 5,118.17

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Solution

The fourth proportional to 13,440.36, 20,155.76 and 5,118.17 is: 7,675.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,440.36 : 20,155.76 = 5,118.17 : x
  2. Step 2: Convert to fraction form
    13,440.36/20,155.76 = 5,118.17/x
  3. Step 3: Cross multiply
    13,440.36x = 20,155.76 × 5,118.17
  4. Step 4: Simplify right side
    13,440.36x = 103,160,479.79
  5. Step 5: Solve for x
    x = 103,160,479.79/13,440.36
  6. Step 6: Final answer
    x = 7,675.43

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.