Home / 27,840.88-38,376.80-21,099.52

Finding the Fourth Proportional to 27,840.88, 38,376.80 and 21,099.52

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Solution

The fourth proportional to 27,840.88, 38,376.80 and 21,099.52 is: 29,084.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,840.88 : 38,376.80 = 21,099.52 : x
  2. Step 2: Convert to fraction form
    27,840.88/38,376.80 = 21,099.52/x
  3. Step 3: Cross multiply
    27,840.88x = 38,376.80 × 21,099.52
  4. Step 4: Simplify right side
    27,840.88x = 809,732,059.14
  5. Step 5: Solve for x
    x = 809,732,059.14/27,840.88
  6. Step 6: Final answer
    x = 29,084.28

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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.