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Finding the Fourth Proportional to 26,709.60, 40,064.40 and 20,488.80

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Solution

The fourth proportional to 26,709.60, 40,064.40 and 20,488.80 is: 30,733.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    26,709.60 : 40,064.40 = 20,488.80 : x
  2. Step 2: Convert to fraction form
    26,709.60/40,064.40 = 20,488.80/x
  3. Step 3: Cross multiply
    26,709.60x = 40,064.40 × 20,488.80
  4. Step 4: Simplify right side
    26,709.60x = 820,871,478.72
  5. Step 5: Solve for x
    x = 820,871,478.72/26,709.60
  6. Step 6: Final answer
    x = 30,733.20

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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.