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Finding the Fourth Proportional to 26,913.20, 40,337.40 and 13,758.80

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Solution

The fourth proportional to 26,913.20, 40,337.40 and 13,758.80 is: 20,621.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    26,913.20 : 40,337.40 = 13,758.80 : x
  2. Step 2: Convert to fraction form
    26,913.20/40,337.40 = 13,758.80/x
  3. Step 3: Cross multiply
    26,913.20x = 40,337.40 × 13,758.80
  4. Step 4: Simplify right side
    26,913.20x = 554,994,219.12
  5. Step 5: Solve for x
    x = 554,994,219.12/26,913.20
  6. Step 6: Final answer
    x = 20,621.64

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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.