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Finding the Fourth Proportional to 17,762.20, 26,585.70 and 12,578.20

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Solution

The fourth proportional to 17,762.20, 26,585.70 and 12,578.20 is: 18,826.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    17,762.20 : 26,585.70 = 12,578.20 : x
  2. Step 2: Convert to fraction form
    17,762.20/26,585.70 = 12,578.20/x
  3. Step 3: Cross multiply
    17,762.20x = 26,585.70 × 12,578.20
  4. Step 4: Simplify right side
    17,762.20x = 334,400,251.74
  5. Step 5: Solve for x
    x = 334,400,251.74/17,762.20
  6. Step 6: Final answer
    x = 18,826.51

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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.