Home / 21,419.54-32,124.09-8,939.67

Finding the Fourth Proportional to 21,419.54, 32,124.09 and 8,939.67

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Solution

The fourth proportional to 21,419.54, 32,124.09 and 8,939.67 is: 13,407.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,419.54 : 32,124.09 = 8,939.67 : x
  2. Step 2: Convert to fraction form
    21,419.54/32,124.09 = 8,939.67/x
  3. Step 3: Cross multiply
    21,419.54x = 32,124.09 × 8,939.67
  4. Step 4: Simplify right side
    21,419.54x = 287,178,676.71
  5. Step 5: Solve for x
    x = 287,178,676.71/21,419.54
  6. Step 6: Final answer
    x = 13,407.32

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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.