Home / 21,437.10-32,156.91-8,289.54

Finding the Fourth Proportional to 21,437.10, 32,156.91 and 8,289.54

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Solution

The fourth proportional to 21,437.10, 32,156.91 and 8,289.54 is: 12,434.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,437.10 : 32,156.91 = 8,289.54 : x
  2. Step 2: Convert to fraction form
    21,437.10/32,156.91 = 8,289.54/x
  3. Step 3: Cross multiply
    21,437.10x = 32,156.91 × 8,289.54
  4. Step 4: Simplify right side
    21,437.10x = 266,565,991.72
  5. Step 5: Solve for x
    x = 266,565,991.72/21,437.10
  6. Step 6: Final answer
    x = 12,434.80

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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.