Home / 21,212.72-29,261.76-19,710.98

Finding the Fourth Proportional to 21,212.72, 29,261.76 and 19,710.98

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Solution

The fourth proportional to 21,212.72, 29,261.76 and 19,710.98 is: 27,190.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,212.72 : 29,261.76 = 19,710.98 : x
  2. Step 2: Convert to fraction form
    21,212.72/29,261.76 = 19,710.98/x
  3. Step 3: Cross multiply
    21,212.72x = 29,261.76 × 19,710.98
  4. Step 4: Simplify right side
    21,212.72x = 576,777,966.12
  5. Step 5: Solve for x
    x = 576,777,966.12/21,212.72
  6. Step 6: Final answer
    x = 27,190.19

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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.