Home / 12,890.85-19,303.46-8,494.98

Finding the Fourth Proportional to 12,890.85, 19,303.46 and 8,494.98

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Solution

The fourth proportional to 12,890.85, 19,303.46 and 8,494.98 is: 12,720.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,890.85 : 19,303.46 = 8,494.98 : x
  2. Step 2: Convert to fraction form
    12,890.85/19,303.46 = 8,494.98/x
  3. Step 3: Cross multiply
    12,890.85x = 19,303.46 × 8,494.98
  4. Step 4: Simplify right side
    12,890.85x = 163,982,506.63
  5. Step 5: Solve for x
    x = 163,982,506.63/12,890.85
  6. Step 6: Final answer
    x = 12,720.85

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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.