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Finding the Fourth Proportional to 34,148.80, 51,255.60 and 21,026.80

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Solution

The fourth proportional to 34,148.80, 51,255.60 and 21,026.80 is: 31,560.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    34,148.80 : 51,255.60 = 21,026.80 : x
  2. Step 2: Convert to fraction form
    34,148.80/51,255.60 = 21,026.80/x
  3. Step 3: Cross multiply
    34,148.80x = 51,255.60 × 21,026.80
  4. Step 4: Simplify right side
    34,148.80x = 1,077,741,250.08
  5. Step 5: Solve for x
    x = 1,077,741,250.08/34,148.80
  6. Step 6: Final answer
    x = 31,560.15

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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.