Home / 16,880.78-25,320.97-7,518.40

Finding the Fourth Proportional to 16,880.78, 25,320.97 and 7,518.40

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Solution

The fourth proportional to 16,880.78, 25,320.97 and 7,518.40 is: 11,277.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    16,880.78 : 25,320.97 = 7,518.40 : x
  2. Step 2: Convert to fraction form
    16,880.78/25,320.97 = 7,518.40/x
  3. Step 3: Cross multiply
    16,880.78x = 25,320.97 × 7,518.40
  4. Step 4: Simplify right side
    16,880.78x = 190,373,126.94
  5. Step 5: Solve for x
    x = 190,373,126.94/16,880.78
  6. Step 6: Final answer
    x = 11,277.51

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.