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Finding the Fourth Proportional to 37,638.79, 51,941.53 and 20,871.79

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Solution

The fourth proportional to 37,638.79, 51,941.53 and 20,871.79 is: 28,803.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    37,638.79 : 51,941.53 = 20,871.79 : x
  2. Step 2: Convert to fraction form
    37,638.79/51,941.53 = 20,871.79/x
  3. Step 3: Cross multiply
    37,638.79x = 51,941.53 × 20,871.79
  4. Step 4: Simplify right side
    37,638.79x = 1,084,112,706.44
  5. Step 5: Solve for x
    x = 1,084,112,706.44/37,638.79
  6. Step 6: Final answer
    x = 28,803.07

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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.