Home / 21,380.03-29,503.80-11,948.57

Finding the Fourth Proportional to 21,380.03, 29,503.80 and 11,948.57

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Solution

The fourth proportional to 21,380.03, 29,503.80 and 11,948.57 is: 16,488.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,380.03 : 29,503.80 = 11,948.57 : x
  2. Step 2: Convert to fraction form
    21,380.03/29,503.80 = 11,948.57/x
  3. Step 3: Cross multiply
    21,380.03x = 29,503.80 × 11,948.57
  4. Step 4: Simplify right side
    21,380.03x = 352,528,072.05
  5. Step 5: Solve for x
    x = 352,528,072.05/21,380.03
  6. Step 6: Final answer
    x = 16,488.67

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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.