Home / 21,130.98-31,710.82-11,277.17

Finding the Fourth Proportional to 21,130.98, 31,710.82 and 11,277.17

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Solution

The fourth proportional to 21,130.98, 31,710.82 and 11,277.17 is: 16,923.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,130.98 : 31,710.82 = 11,277.17 : x
  2. Step 2: Convert to fraction form
    21,130.98/31,710.82 = 11,277.17/x
  3. Step 3: Cross multiply
    21,130.98x = 31,710.82 × 11,277.17
  4. Step 4: Simplify right side
    21,130.98x = 357,608,407.95
  5. Step 5: Solve for x
    x = 357,608,407.95/21,130.98
  6. Step 6: Final answer
    x = 16,923.42

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.