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Finding the Fourth Proportional to 19,355.40, 29,033.10 and 12,794.40

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Solution

The fourth proportional to 19,355.40, 29,033.10 and 12,794.40 is: 19,191.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,355.40 : 29,033.10 = 12,794.40 : x
  2. Step 2: Convert to fraction form
    19,355.40/29,033.10 = 12,794.40/x
  3. Step 3: Cross multiply
    19,355.40x = 29,033.10 × 12,794.40
  4. Step 4: Simplify right side
    19,355.40x = 371,461,094.64
  5. Step 5: Solve for x
    x = 371,461,094.64/19,355.40
  6. Step 6: Final answer
    x = 19,191.60

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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.