Home / 19,406.46-26,755.38-12,680.40

Finding the Fourth Proportional to 19,406.46, 26,755.38 and 12,680.40

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Solution

The fourth proportional to 19,406.46, 26,755.38 and 12,680.40 is: 17,482.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,406.46 : 26,755.38 = 12,680.40 : x
  2. Step 2: Convert to fraction form
    19,406.46/26,755.38 = 12,680.40/x
  3. Step 3: Cross multiply
    19,406.46x = 26,755.38 × 12,680.40
  4. Step 4: Simplify right side
    19,406.46x = 339,268,920.55
  5. Step 5: Solve for x
    x = 339,268,920.55/19,406.46
  6. Step 6: Final answer
    x = 17,482.27

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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.