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Finding the Fourth Proportional to 25.47, 35.16 and 19

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Solution

The fourth proportional to 25.47, 35.16 and 19 is: 26.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    25.47 : 35.16 = 19 : x
  2. Step 2: Convert to fraction form
    25.47/35.16 = 19/x
  3. Step 3: Cross multiply
    25.47x = 35.16 × 19
  4. Step 4: Simplify right side
    25.47x = 668.04
  5. Step 5: Solve for x
    x = 668.04/25.47
  6. Step 6: Final answer
    x = 26.23

Related Problems

Find fourth proportional to 12.74, 17.58 and 9.50
Half scale
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Double scale
Find fourth proportional to 26.47, 36.54 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.