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Finding the Fourth Proportional to 28,947, 39,946.86 and 16,371.48

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Solution

The fourth proportional to 28,947, 39,946.86 and 16,371.48 is: 22,592.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,947 : 39,946.86 = 16,371.48 : x
  2. Step 2: Convert to fraction form
    28,947/39,946.86 = 16,371.48/x
  3. Step 3: Cross multiply
    28,947x = 39,946.86 × 16,371.48
  4. Step 4: Simplify right side
    28,947x = 653,989,219.55
  5. Step 5: Solve for x
    x = 653,989,219.55/28,947
  6. Step 6: Final answer
    x = 22,592.64

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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.