Home / 13,138.11-19,686.92-6,466.95

Finding the Fourth Proportional to 13,138.11, 19,686.92 and 6,466.95

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Solution

The fourth proportional to 13,138.11, 19,686.92 and 6,466.95 is: 9,690.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,138.11 : 19,686.92 = 6,466.95 : x
  2. Step 2: Convert to fraction form
    13,138.11/19,686.92 = 6,466.95/x
  3. Step 3: Cross multiply
    13,138.11x = 19,686.92 × 6,466.95
  4. Step 4: Simplify right side
    13,138.11x = 127,314,294.96
  5. Step 5: Solve for x
    x = 127,314,294.96/13,138.11
  6. Step 6: Final answer
    x = 9,690.46

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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.