Home / 21,277.12-29,363.45-11,845.68

Finding the Fourth Proportional to 21,277.12, 29,363.45 and 11,845.68

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Solution

The fourth proportional to 21,277.12, 29,363.45 and 11,845.68 is: 16,347.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,277.12 : 29,363.45 = 11,845.68 : x
  2. Step 2: Convert to fraction form
    21,277.12/29,363.45 = 11,845.68/x
  3. Step 3: Cross multiply
    21,277.12x = 29,363.45 × 11,845.68
  4. Step 4: Simplify right side
    21,277.12x = 347,830,032.40
  5. Step 5: Solve for x
    x = 347,830,032.40/21,277.12
  6. Step 6: Final answer
    x = 16,347.61

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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.