Home / 27,015.45-37,281.36-15,078.78

Finding the Fourth Proportional to 27,015.45, 37,281.36 and 15,078.78

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Solution

The fourth proportional to 27,015.45, 37,281.36 and 15,078.78 is: 20,808.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,015.45 : 37,281.36 = 15,078.78 : x
  2. Step 2: Convert to fraction form
    27,015.45/37,281.36 = 15,078.78/x
  3. Step 3: Cross multiply
    27,015.45x = 37,281.36 × 15,078.78
  4. Step 4: Simplify right side
    27,015.45x = 562,157,621.89
  5. Step 5: Solve for x
    x = 562,157,621.89/27,015.45
  6. Step 6: Final answer
    x = 20,808.75

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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.