Home / 27,993.36-38,598.80-20,907.84

Finding the Fourth Proportional to 27,993.36, 38,598.80 and 20,907.84

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Solution

The fourth proportional to 27,993.36, 38,598.80 and 20,907.84 is: 28,828.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,993.36 : 38,598.80 = 20,907.84 : x
  2. Step 2: Convert to fraction form
    27,993.36/38,598.80 = 20,907.84/x
  3. Step 3: Cross multiply
    27,993.36x = 38,598.80 × 20,907.84
  4. Step 4: Simplify right side
    27,993.36x = 807,017,534.59
  5. Step 5: Solve for x
    x = 807,017,534.59/27,993.36
  6. Step 6: Final answer
    x = 28,828.89

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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.