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Finding the Fourth Proportional to 26,890.20, 40,302.90 and 13,735.80

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Solution

The fourth proportional to 26,890.20, 40,302.90 and 13,735.80 is: 20,587.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    26,890.20 : 40,302.90 = 13,735.80 : x
  2. Step 2: Convert to fraction form
    26,890.20/40,302.90 = 13,735.80/x
  3. Step 3: Cross multiply
    26,890.20x = 40,302.90 × 13,735.80
  4. Step 4: Simplify right side
    26,890.20x = 553,592,573.82
  5. Step 5: Solve for x
    x = 553,592,573.82/26,890.20
  6. Step 6: Final answer
    x = 20,587.15

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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.