Home / 21,866.94-30,141.45-14,781.06

Finding the Fourth Proportional to 21,866.94, 30,141.45 and 14,781.06

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Solution

The fourth proportional to 21,866.94, 30,141.45 and 14,781.06 is: 20,374.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,866.94 : 30,141.45 = 14,781.06 : x
  2. Step 2: Convert to fraction form
    21,866.94/30,141.45 = 14,781.06/x
  3. Step 3: Cross multiply
    21,866.94x = 30,141.45 × 14,781.06
  4. Step 4: Simplify right side
    21,866.94x = 445,522,580.94
  5. Step 5: Solve for x
    x = 445,522,580.94/21,866.94
  6. Step 6: Final answer
    x = 20,374.25

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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.