Home / 27,911.98-38,518.74-15,165.28

Finding the Fourth Proportional to 27,911.98, 38,518.74 and 15,165.28

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Solution

The fourth proportional to 27,911.98, 38,518.74 and 15,165.28 is: 20,928.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,911.98 : 38,518.74 = 15,165.28 : x
  2. Step 2: Convert to fraction form
    27,911.98/38,518.74 = 15,165.28/x
  3. Step 3: Cross multiply
    27,911.98x = 38,518.74 × 15,165.28
  4. Step 4: Simplify right side
    27,911.98x = 584,147,477.35
  5. Step 5: Solve for x
    x = 584,147,477.35/27,911.98
  6. Step 6: Final answer
    x = 20,928.20

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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.