Home / 12,909.36-19,362.21-4,143.14

Finding the Fourth Proportional to 12,909.36, 19,362.21 and 4,143.14

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Solution

The fourth proportional to 12,909.36, 19,362.21 and 4,143.14 is: 6,214.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,909.36 : 19,362.21 = 4,143.14 : x
  2. Step 2: Convert to fraction form
    12,909.36/19,362.21 = 4,143.14/x
  3. Step 3: Cross multiply
    12,909.36x = 19,362.21 × 4,143.14
  4. Step 4: Simplify right side
    12,909.36x = 80,220,346.74
  5. Step 5: Solve for x
    x = 80,220,346.74/12,909.36
  6. Step 6: Final answer
    x = 6,214.12

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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.