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Finding the Fourth Proportional to 34,803.90, 47,993.08 and 20,654.01

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Solution

The fourth proportional to 34,803.90, 47,993.08 and 20,654.01 is: 28,480.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    34,803.90 : 47,993.08 = 20,654.01 : x
  2. Step 2: Convert to fraction form
    34,803.90/47,993.08 = 20,654.01/x
  3. Step 3: Cross multiply
    34,803.90x = 47,993.08 × 20,654.01
  4. Step 4: Simplify right side
    34,803.90x = 991,249,401.24
  5. Step 5: Solve for x
    x = 991,249,401.24/34,803.90
  6. Step 6: Final answer
    x = 28,480.99

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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.