Home / 12,690.11-19,032.12-5,294.67

Finding the Fourth Proportional to 12,690.11, 19,032.12 and 5,294.67

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Solution

The fourth proportional to 12,690.11, 19,032.12 and 5,294.67 is: 7,940.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,690.11 : 19,032.12 = 5,294.67 : x
  2. Step 2: Convert to fraction form
    12,690.11/19,032.12 = 5,294.67/x
  3. Step 3: Cross multiply
    12,690.11x = 19,032.12 × 5,294.67
  4. Step 4: Simplify right side
    12,690.11x = 100,768,794.80
  5. Step 5: Solve for x
    x = 100,768,794.80/12,690.11
  6. Step 6: Final answer
    x = 7,940.74

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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.