Home / 19,476.90-26,880.60-12,768.18

Finding the Fourth Proportional to 19,476.90, 26,880.60 and 12,768.18

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Solution

The fourth proportional to 19,476.90, 26,880.60 and 12,768.18 is: 17,621.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,476.90 : 26,880.60 = 12,768.18 : x
  2. Step 2: Convert to fraction form
    19,476.90/26,880.60 = 12,768.18/x
  3. Step 3: Cross multiply
    19,476.90x = 26,880.60 × 12,768.18
  4. Step 4: Simplify right side
    19,476.90x = 343,216,339.31
  5. Step 5: Solve for x
    x = 343,216,339.31/19,476.90
  6. Step 6: Final answer
    x = 17,621.71

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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.