Home / 13,117.40-18,098.80-8,408.06

Finding the Fourth Proportional to 13,117.40, 18,098.80 and 8,408.06

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Solution

The fourth proportional to 13,117.40, 18,098.80 and 8,408.06 is: 11,601.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,117.40 : 18,098.80 = 8,408.06 : x
  2. Step 2: Convert to fraction form
    13,117.40/18,098.80 = 8,408.06/x
  3. Step 3: Cross multiply
    13,117.40x = 18,098.80 × 8,408.06
  4. Step 4: Simplify right side
    13,117.40x = 152,175,684.81
  5. Step 5: Solve for x
    x = 152,175,684.81/13,117.40
  6. Step 6: Final answer
    x = 11,601.06

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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.