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Finding the Fourth Proportional to 19,196.40, 28,837.80 and 13,364.40

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Solution

The fourth proportional to 19,196.40, 28,837.80 and 13,364.40 is: 20,076.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,196.40 : 28,837.80 = 13,364.40 : x
  2. Step 2: Convert to fraction form
    19,196.40/28,837.80 = 13,364.40/x
  3. Step 3: Cross multiply
    19,196.40x = 28,837.80 × 13,364.40
  4. Step 4: Simplify right side
    19,196.40x = 385,399,894.32
  5. Step 5: Solve for x
    x = 385,399,894.32/19,196.40
  6. Step 6: Final answer
    x = 20,076.68

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.