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Finding the Fourth Proportional to 21,405.94, 32,109.01 and 7,554.94

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Solution

The fourth proportional to 21,405.94, 32,109.01 and 7,554.94 is: 11,332.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,405.94 : 32,109.01 = 7,554.94 : x
  2. Step 2: Convert to fraction form
    21,405.94/32,109.01 = 7,554.94/x
  3. Step 3: Cross multiply
    21,405.94x = 32,109.01 × 7,554.94
  4. Step 4: Simplify right side
    21,405.94x = 242,581,544.85
  5. Step 5: Solve for x
    x = 242,581,544.85/21,405.94
  6. Step 6: Final answer
    x = 11,332.44

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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.