Home / 21,548.82-29,737.74-11,989.47

Finding the Fourth Proportional to 21,548.82, 29,737.74 and 11,989.47

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Solution

The fourth proportional to 21,548.82, 29,737.74 and 11,989.47 is: 16,545.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,548.82 : 29,737.74 = 11,989.47 : x
  2. Step 2: Convert to fraction form
    21,548.82/29,737.74 = 11,989.47/x
  3. Step 3: Cross multiply
    21,548.82x = 29,737.74 × 11,989.47
  4. Step 4: Simplify right side
    21,548.82x = 356,539,741.60
  5. Step 5: Solve for x
    x = 356,539,741.60/21,548.82
  6. Step 6: Final answer
    x = 16,545.67

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.