Home / 27,955.40-38,538.86-19,983.78

Finding the Fourth Proportional to 27,955.40, 38,538.86 and 19,983.78

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Solution

The fourth proportional to 27,955.40, 38,538.86 and 19,983.78 is: 27,549.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,955.40 : 38,538.86 = 19,983.78 : x
  2. Step 2: Convert to fraction form
    27,955.40/38,538.86 = 19,983.78/x
  3. Step 3: Cross multiply
    27,955.40x = 38,538.86 × 19,983.78
  4. Step 4: Simplify right side
    27,955.40x = 770,151,999.77
  5. Step 5: Solve for x
    x = 770,151,999.77/27,955.40
  6. Step 6: Final answer
    x = 27,549.32

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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.