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Finding the Fourth Proportional to 19,497.60, 29,235.60 and 8,402.40

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Solution

The fourth proportional to 19,497.60, 29,235.60 and 8,402.40 is: 12,598.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,497.60 : 29,235.60 = 8,402.40 : x
  2. Step 2: Convert to fraction form
    19,497.60/29,235.60 = 8,402.40/x
  3. Step 3: Cross multiply
    19,497.60x = 29,235.60 × 8,402.40
  4. Step 4: Simplify right side
    19,497.60x = 245,649,205.44
  5. Step 5: Solve for x
    x = 245,649,205.44/19,497.60
  6. Step 6: Final answer
    x = 12,598.95

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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.