Home / 12,983.40-19,462.77-4,212.18

Finding the Fourth Proportional to 12,983.40, 19,462.77 and 4,212.18

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Solution

The fourth proportional to 12,983.40, 19,462.77 and 4,212.18 is: 6,314.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,983.40 : 19,462.77 = 4,212.18 : x
  2. Step 2: Convert to fraction form
    12,983.40/19,462.77 = 4,212.18/x
  3. Step 3: Cross multiply
    12,983.40x = 19,462.77 × 4,212.18
  4. Step 4: Simplify right side
    12,983.40x = 81,980,690.54
  5. Step 5: Solve for x
    x = 81,980,690.54/12,983.40
  6. Step 6: Final answer
    x = 6,314.27

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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.