Home / 27,918.90-38,528.06-15,982.20

Finding the Fourth Proportional to 27,918.90, 38,528.06 and 15,982.20

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Solution

The fourth proportional to 27,918.90, 38,528.06 and 15,982.20 is: 22,055.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,918.90 : 38,528.06 = 15,982.20 : x
  2. Step 2: Convert to fraction form
    27,918.90/38,528.06 = 15,982.20/x
  3. Step 3: Cross multiply
    27,918.90x = 38,528.06 × 15,982.20
  4. Step 4: Simplify right side
    27,918.90x = 615,763,080.62
  5. Step 5: Solve for x
    x = 615,763,080.62/27,918.90
  6. Step 6: Final answer
    x = 22,055.42

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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.