Home / 27,678.36-38,194.98-15,740.04

Finding the Fourth Proportional to 27,678.36, 38,194.98 and 15,740.04

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Solution

The fourth proportional to 27,678.36, 38,194.98 and 15,740.04 is: 21,720.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,678.36 : 38,194.98 = 15,740.04 : x
  2. Step 2: Convert to fraction form
    27,678.36/38,194.98 = 15,740.04/x
  3. Step 3: Cross multiply
    27,678.36x = 38,194.98 × 15,740.04
  4. Step 4: Simplify right side
    27,678.36x = 601,190,513.00
  5. Step 5: Solve for x
    x = 601,190,513.00/27,678.36
  6. Step 6: Final answer
    x = 21,720.60

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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.