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Finding the Fourth Proportional to 19,603.70, 29,405.50 and 8,508.95

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Solution

The fourth proportional to 19,603.70, 29,405.50 and 8,508.95 is: 12,763.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,603.70 : 29,405.50 = 8,508.95 : x
  2. Step 2: Convert to fraction form
    19,603.70/29,405.50 = 8,508.95/x
  3. Step 3: Cross multiply
    19,603.70x = 29,405.50 × 8,508.95
  4. Step 4: Simplify right side
    19,603.70x = 250,209,929.23
  5. Step 5: Solve for x
    x = 250,209,929.23/19,603.70
  6. Step 6: Final answer
    x = 12,763.40

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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.