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Finding the Fourth Proportional to 13,311.45, 19,950.22 and 7,074.45

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Solution

The fourth proportional to 13,311.45, 19,950.22 and 7,074.45 is: 10,602.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,311.45 : 19,950.22 = 7,074.45 : x
  2. Step 2: Convert to fraction form
    13,311.45/19,950.22 = 7,074.45/x
  3. Step 3: Cross multiply
    13,311.45x = 19,950.22 × 7,074.45
  4. Step 4: Simplify right side
    13,311.45x = 141,136,802.93
  5. Step 5: Solve for x
    x = 141,136,802.93/13,311.45
  6. Step 6: Final answer
    x = 10,602.66

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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.