Home / 27,987.58-38,622.74-15,412.32

Finding the Fourth Proportional to 27,987.58, 38,622.74 and 15,412.32

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Solution

The fourth proportional to 27,987.58, 38,622.74 and 15,412.32 is: 21,268.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,987.58 : 38,622.74 = 15,412.32 : x
  2. Step 2: Convert to fraction form
    27,987.58/38,622.74 = 15,412.32/x
  3. Step 3: Cross multiply
    27,987.58x = 38,622.74 × 15,412.32
  4. Step 4: Simplify right side
    27,987.58x = 595,266,028.16
  5. Step 5: Solve for x
    x = 595,266,028.16/27,987.58
  6. Step 6: Final answer
    x = 21,268.94

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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.