Home / 39,604.90-54,654.78-21,700.60

Finding the Fourth Proportional to 39,604.90, 54,654.78 and 21,700.60

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Solution

The fourth proportional to 39,604.90, 54,654.78 and 21,700.60 is: 29,946.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,604.90 : 54,654.78 = 21,700.60 : x
  2. Step 2: Convert to fraction form
    39,604.90/54,654.78 = 21,700.60/x
  3. Step 3: Cross multiply
    39,604.90x = 54,654.78 × 21,700.60
  4. Step 4: Simplify right side
    39,604.90x = 1,186,041,518.87
  5. Step 5: Solve for x
    x = 1,186,041,518.87/39,604.90
  6. Step 6: Final answer
    x = 29,946.84

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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.