Home / 21,160.04-29,200.42-11,728.52

Finding the Fourth Proportional to 21,160.04, 29,200.42 and 11,728.52

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Solution

The fourth proportional to 21,160.04, 29,200.42 and 11,728.52 is: 16,185.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,160.04 : 29,200.42 = 11,728.52 : x
  2. Step 2: Convert to fraction form
    21,160.04/29,200.42 = 11,728.52/x
  3. Step 3: Cross multiply
    21,160.04x = 29,200.42 × 11,728.52
  4. Step 4: Simplify right side
    21,160.04x = 342,477,709.98
  5. Step 5: Solve for x
    x = 342,477,709.98/21,160.04
  6. Step 6: Final answer
    x = 16,185.12

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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.