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Finding the Fourth Proportional to 35,478.54, 48,963.67 and 20,373.18

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Solution

The fourth proportional to 35,478.54, 48,963.67 and 20,373.18 is: 28,116.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    35,478.54 : 48,963.67 = 20,373.18 : x
  2. Step 2: Convert to fraction form
    35,478.54/48,963.67 = 20,373.18/x
  3. Step 3: Cross multiply
    35,478.54x = 48,963.67 × 20,373.18
  4. Step 4: Simplify right side
    35,478.54x = 997,545,662.37
  5. Step 5: Solve for x
    x = 997,545,662.37/35,478.54
  6. Step 6: Final answer
    x = 28,116.87

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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.