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Finding the Fourth Proportional to 19,008.40, 28,528.80 and 8,494.60

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Solution

The fourth proportional to 19,008.40, 28,528.80 and 8,494.60 is: 12,749.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,008.40 : 28,528.80 = 8,494.60 : x
  2. Step 2: Convert to fraction form
    19,008.40/28,528.80 = 8,494.60/x
  3. Step 3: Cross multiply
    19,008.40x = 28,528.80 × 8,494.60
  4. Step 4: Simplify right side
    19,008.40x = 242,340,744.48
  5. Step 5: Solve for x
    x = 242,340,744.48/19,008.40
  6. Step 6: Final answer
    x = 12,749.14

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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.