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Finding the Fourth Proportional to 26.28, 36.24 and 19

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Solution

The fourth proportional to 26.28, 36.24 and 19 is: 26.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    26.28 : 36.24 = 19 : x
  2. Step 2: Convert to fraction form
    26.28/36.24 = 19/x
  3. Step 3: Cross multiply
    26.28x = 36.24 × 19
  4. Step 4: Simplify right side
    26.28x = 688.56
  5. Step 5: Solve for x
    x = 688.56/26.28
  6. Step 6: Final answer
    x = 26.20

Related Problems

Find fourth proportional to 13.14, 18.12 and 9.50
Half scale
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Double scale
Find fourth proportional to 27.28, 37.62 and 20
Similar ratio
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.