Home / 21,373.42-29,503.44-19,131.28

Finding the Fourth Proportional to 21,373.42, 29,503.44 and 19,131.28

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Solution

The fourth proportional to 21,373.42, 29,503.44 and 19,131.28 is: 26,408.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,373.42 : 29,503.44 = 19,131.28 : x
  2. Step 2: Convert to fraction form
    21,373.42/29,503.44 = 19,131.28/x
  3. Step 3: Cross multiply
    21,373.42x = 29,503.44 × 19,131.28
  4. Step 4: Simplify right side
    21,373.42x = 564,438,571.60
  5. Step 5: Solve for x
    x = 564,438,571.60/21,373.42
  6. Step 6: Final answer
    x = 26,408.43

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Double scale
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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.