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Finding the Fourth Proportional to 19, 26.14 and 14.89

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Solution

The fourth proportional to 19, 26.14 and 14.89 is: 20.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    19 : 26.14 = 14.89 : x
  2. Step 2: Convert to fraction form
    19/26.14 = 14.89/x
  3. Step 3: Cross multiply
    19x = 26.14 × 14.89
  4. Step 4: Simplify right side
    19x = 389.22
  5. Step 5: Solve for x
    x = 389.22/19
  6. Step 6: Final answer
    x = 20.49

Related Problems

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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.