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Finding the Fourth Proportional to 28,487.88, 39,283.08 and 19,548.44

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Solution

The fourth proportional to 28,487.88, 39,283.08 and 19,548.44 is: 26,956.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,487.88 : 39,283.08 = 19,548.44 : x
  2. Step 2: Convert to fraction form
    28,487.88/39,283.08 = 19,548.44/x
  3. Step 3: Cross multiply
    28,487.88x = 39,283.08 × 19,548.44
  4. Step 4: Simplify right side
    28,487.88x = 767,922,932.40
  5. Step 5: Solve for x
    x = 767,922,932.40/28,487.88
  6. Step 6: Final answer
    x = 26,956.13

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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.