Home / 15,155.78-20,924.32-9,782.94

Finding the Fourth Proportional to 15,155.78, 20,924.32 and 9,782.94

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Solution

The fourth proportional to 15,155.78, 20,924.32 and 9,782.94 is: 13,506.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,155.78 : 20,924.32 = 9,782.94 : x
  2. Step 2: Convert to fraction form
    15,155.78/20,924.32 = 9,782.94/x
  3. Step 3: Cross multiply
    15,155.78x = 20,924.32 × 9,782.94
  4. Step 4: Simplify right side
    15,155.78x = 204,701,367.10
  5. Step 5: Solve for x
    x = 204,701,367.10/15,155.78
  6. Step 6: Final answer
    x = 13,506.49

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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.