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Finding the Fourth Proportional to 14,384.87, 21,579.42 and 7,368.85

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Solution

The fourth proportional to 14,384.87, 21,579.42 and 7,368.85 is: 11,054.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,384.87 : 21,579.42 = 7,368.85 : x
  2. Step 2: Convert to fraction form
    14,384.87/21,579.42 = 7,368.85/x
  3. Step 3: Cross multiply
    14,384.87x = 21,579.42 × 7,368.85
  4. Step 4: Simplify right side
    14,384.87x = 159,015,401.17
  5. Step 5: Solve for x
    x = 159,015,401.17/14,384.87
  6. Step 6: Final answer
    x = 11,054.35

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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.