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Finding the Fourth Proportional to 26,555.57, 39,824.07 and 7,830.63

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Solution

The fourth proportional to 26,555.57, 39,824.07 and 7,830.63 is: 11,743.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    26,555.57 : 39,824.07 = 7,830.63 : x
  2. Step 2: Convert to fraction form
    26,555.57/39,824.07 = 7,830.63/x
  3. Step 3: Cross multiply
    26,555.57x = 39,824.07 × 7,830.63
  4. Step 4: Simplify right side
    26,555.57x = 311,847,557.26
  5. Step 5: Solve for x
    x = 311,847,557.26/26,555.57
  6. Step 6: Final answer
    x = 11,743.21

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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.