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Finding the Fourth Proportional to 13,329.70, 19,994.55 and 13,135.30

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Solution

The fourth proportional to 13,329.70, 19,994.55 and 13,135.30 is: 19,702.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,329.70 : 19,994.55 = 13,135.30 : x
  2. Step 2: Convert to fraction form
    13,329.70/19,994.55 = 13,135.30/x
  3. Step 3: Cross multiply
    13,329.70x = 19,994.55 × 13,135.30
  4. Step 4: Simplify right side
    13,329.70x = 262,634,412.62
  5. Step 5: Solve for x
    x = 262,634,412.62/13,329.70
  6. Step 6: Final answer
    x = 19,702.95

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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.