Home / 27,678.09-38,195.71-15,577.60

Finding the Fourth Proportional to 27,678.09, 38,195.71 and 15,577.60

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Solution

The fourth proportional to 27,678.09, 38,195.71 and 15,577.60 is: 21,497.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,678.09 : 38,195.71 = 15,577.60 : x
  2. Step 2: Convert to fraction form
    27,678.09/38,195.71 = 15,577.60/x
  3. Step 3: Cross multiply
    27,678.09x = 38,195.71 × 15,577.60
  4. Step 4: Simplify right side
    27,678.09x = 594,997,492.10
  5. Step 5: Solve for x
    x = 594,997,492.10/27,678.09
  6. Step 6: Final answer
    x = 21,497.06

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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.