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Finding the Fourth Proportional to 21,801.39, 32,706.93 and 7,950.39

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Solution

The fourth proportional to 21,801.39, 32,706.93 and 7,950.39 is: 11,927.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,801.39 : 32,706.93 = 7,950.39 : x
  2. Step 2: Convert to fraction form
    21,801.39/32,706.93 = 7,950.39/x
  3. Step 3: Cross multiply
    21,801.39x = 32,706.93 × 7,950.39
  4. Step 4: Simplify right side
    21,801.39x = 260,032,849.20
  5. Step 5: Solve for x
    x = 260,032,849.20/21,801.39
  6. Step 6: Final answer
    x = 11,927.35

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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.