Home / 12,918.74-19,344.28-8,462.39

Finding the Fourth Proportional to 12,918.74, 19,344.28 and 8,462.39

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Solution

The fourth proportional to 12,918.74, 19,344.28 and 8,462.39 is: 12,671.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,918.74 : 19,344.28 = 8,462.39 : x
  2. Step 2: Convert to fraction form
    12,918.74/19,344.28 = 8,462.39/x
  3. Step 3: Cross multiply
    12,918.74x = 19,344.28 × 8,462.39
  4. Step 4: Simplify right side
    12,918.74x = 163,698,817.83
  5. Step 5: Solve for x
    x = 163,698,817.83/12,918.74
  6. Step 6: Final answer
    x = 12,671.42

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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.