Home / 17,920.64-26,880.96-4,772.36

Finding the Fourth Proportional to 17,920.64, 26,880.96 and 4,772.36

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Solution

The fourth proportional to 17,920.64, 26,880.96 and 4,772.36 is: 7,158.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    17,920.64 : 26,880.96 = 4,772.36 : x
  2. Step 2: Convert to fraction form
    17,920.64/26,880.96 = 4,772.36/x
  3. Step 3: Cross multiply
    17,920.64x = 26,880.96 × 4,772.36
  4. Step 4: Simplify right side
    17,920.64x = 128,285,618.27
  5. Step 5: Solve for x
    x = 128,285,618.27/17,920.64
  6. Step 6: Final answer
    x = 7,158.54

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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.