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Finding the Fourth Proportional to 19,335.70, 26,675.40 and 12,619

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Solution

The fourth proportional to 19,335.70, 26,675.40 and 12,619 is: 17,409.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,335.70 : 26,675.40 = 12,619 : x
  2. Step 2: Convert to fraction form
    19,335.70/26,675.40 = 12,619/x
  3. Step 3: Cross multiply
    19,335.70x = 26,675.40 × 12,619
  4. Step 4: Simplify right side
    19,335.70x = 336,616,872.60
  5. Step 5: Solve for x
    x = 336,616,872.60/19,335.70
  6. Step 6: Final answer
    x = 17,409.09

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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.