Home / 21,391.83-29,485.35-16,077.42

Finding the Fourth Proportional to 21,391.83, 29,485.35 and 16,077.42

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Solution

The fourth proportional to 21,391.83, 29,485.35 and 16,077.42 is: 22,160.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,391.83 : 29,485.35 = 16,077.42 : x
  2. Step 2: Convert to fraction form
    21,391.83/29,485.35 = 16,077.42/x
  3. Step 3: Cross multiply
    21,391.83x = 29,485.35 × 16,077.42
  4. Step 4: Simplify right side
    21,391.83x = 474,048,127.98
  5. Step 5: Solve for x
    x = 474,048,127.98/21,391.83
  6. Step 6: Final answer
    x = 22,160.25

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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.