Home / 21,168.24-29,200.36-19,666.48

Finding the Fourth Proportional to 21,168.24, 29,200.36 and 19,666.48

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Solution

The fourth proportional to 21,168.24, 29,200.36 and 19,666.48 is: 27,128.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,168.24 : 29,200.36 = 19,666.48 : x
  2. Step 2: Convert to fraction form
    21,168.24/29,200.36 = 19,666.48/x
  3. Step 3: Cross multiply
    21,168.24x = 29,200.36 × 19,666.48
  4. Step 4: Simplify right side
    21,168.24x = 574,268,295.93
  5. Step 5: Solve for x
    x = 574,268,295.93/21,168.24
  6. Step 6: Final answer
    x = 27,128.77

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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.