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Finding the Fourth Proportional to 12,890.03, 19,337.04 and 5,494.50

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Solution

The fourth proportional to 12,890.03, 19,337.04 and 5,494.50 is: 8,242.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,890.03 : 19,337.04 = 5,494.50 : x
  2. Step 2: Convert to fraction form
    12,890.03/19,337.04 = 5,494.50/x
  3. Step 3: Cross multiply
    12,890.03x = 19,337.04 × 5,494.50
  4. Step 4: Simplify right side
    12,890.03x = 106,247,366.28
  5. Step 5: Solve for x
    x = 106,247,366.28/12,890.03
  6. Step 6: Final answer
    x = 8,242.60

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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.