Home / 27,768.02-38,316.56-15,667.79

Finding the Fourth Proportional to 27,768.02, 38,316.56 and 15,667.79

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Solution

The fourth proportional to 27,768.02, 38,316.56 and 15,667.79 is: 21,619.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,768.02 : 38,316.56 = 15,667.79 : x
  2. Step 2: Convert to fraction form
    27,768.02/38,316.56 = 15,667.79/x
  3. Step 3: Cross multiply
    27,768.02x = 38,316.56 × 15,667.79
  4. Step 4: Simplify right side
    27,768.02x = 600,335,815.60
  5. Step 5: Solve for x
    x = 600,335,815.60/27,768.02
  6. Step 6: Final answer
    x = 21,619.68

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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.