Home / 21,132.75-29,172.62-13,966.99

Finding the Fourth Proportional to 21,132.75, 29,172.62 and 13,966.99

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Solution

The fourth proportional to 21,132.75, 29,172.62 and 13,966.99 is: 19,280.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,132.75 : 29,172.62 = 13,966.99 : x
  2. Step 2: Convert to fraction form
    21,132.75/29,172.62 = 13,966.99/x
  3. Step 3: Cross multiply
    21,132.75x = 29,172.62 × 13,966.99
  4. Step 4: Simplify right side
    21,132.75x = 407,453,653.80
  5. Step 5: Solve for x
    x = 407,453,653.80/21,132.75
  6. Step 6: Final answer
    x = 19,280.67

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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.