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Finding the Fourth Proportional to 19,504.70, 26,919.71 and 11,955.23

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Solution

The fourth proportional to 19,504.70, 26,919.71 and 11,955.23 is: 16,500.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,504.70 : 26,919.71 = 11,955.23 : x
  2. Step 2: Convert to fraction form
    19,504.70/26,919.71 = 11,955.23/x
  3. Step 3: Cross multiply
    19,504.70x = 26,919.71 × 11,955.23
  4. Step 4: Simplify right side
    19,504.70x = 321,831,264.81
  5. Step 5: Solve for x
    x = 321,831,264.81/19,504.70
  6. Step 6: Final answer
    x = 16,500.19

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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.