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Finding the Fourth Proportional to 21,699.52, 32,537.70 and 10,289.44

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Solution

The fourth proportional to 21,699.52, 32,537.70 and 10,289.44 is: 15,428.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,699.52 : 32,537.70 = 10,289.44 : x
  2. Step 2: Convert to fraction form
    21,699.52/32,537.70 = 10,289.44/x
  3. Step 3: Cross multiply
    21,699.52x = 32,537.70 × 10,289.44
  4. Step 4: Simplify right side
    21,699.52x = 334,794,711.89
  5. Step 5: Solve for x
    x = 334,794,711.89/21,699.52
  6. Step 6: Final answer
    x = 15,428.67

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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.