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Finding the Fourth Proportional to 19,950.93, 29,926.21 and 7,638.93

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Solution

The fourth proportional to 19,950.93, 29,926.21 and 7,638.93 is: 11,458.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,950.93 : 29,926.21 = 7,638.93 : x
  2. Step 2: Convert to fraction form
    19,950.93/29,926.21 = 7,638.93/x
  3. Step 3: Cross multiply
    19,950.93x = 29,926.21 × 7,638.93
  4. Step 4: Simplify right side
    19,950.93x = 228,604,223.36
  5. Step 5: Solve for x
    x = 228,604,223.36/19,950.93
  6. Step 6: Final answer
    x = 11,458.32

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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.