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Finding the Fourth Proportional to 13,334.17, 19,994.73 and 7,788.91

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Solution

The fourth proportional to 13,334.17, 19,994.73 and 7,788.91 is: 11,679.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,334.17 : 19,994.73 = 7,788.91 : x
  2. Step 2: Convert to fraction form
    13,334.17/19,994.73 = 7,788.91/x
  3. Step 3: Cross multiply
    13,334.17x = 19,994.73 × 7,788.91
  4. Step 4: Simplify right side
    13,334.17x = 155,737,113.50
  5. Step 5: Solve for x
    x = 155,737,113.50/13,334.17
  6. Step 6: Final answer
    x = 11,679.55

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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.