Home / 21,428.36-32,151.77-11,565.67

Finding the Fourth Proportional to 21,428.36, 32,151.77 and 11,565.67

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Solution

The fourth proportional to 21,428.36, 32,151.77 and 11,565.67 is: 17,353.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,428.36 : 32,151.77 = 11,565.67 : x
  2. Step 2: Convert to fraction form
    21,428.36/32,151.77 = 11,565.67/x
  3. Step 3: Cross multiply
    21,428.36x = 32,151.77 × 11,565.67
  4. Step 4: Simplify right side
    21,428.36x = 371,856,761.74
  5. Step 5: Solve for x
    x = 371,856,761.74/21,428.36
  6. Step 6: Final answer
    x = 17,353.49

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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.