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Finding the Fourth Proportional to 28,963, 39,968.98 and 16,387.48

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Solution

The fourth proportional to 28,963, 39,968.98 and 16,387.48 is: 22,614.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,963 : 39,968.98 = 16,387.48 : x
  2. Step 2: Convert to fraction form
    28,963/39,968.98 = 16,387.48/x
  3. Step 3: Cross multiply
    28,963x = 39,968.98 × 16,387.48
  4. Step 4: Simplify right side
    28,963x = 654,990,860.37
  5. Step 5: Solve for x
    x = 654,990,860.37/28,963
  6. Step 6: Final answer
    x = 22,614.75

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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.