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Finding the Fourth Proportional to 34,756.90, 47,946.03 and 21,149.10

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Solution

The fourth proportional to 34,756.90, 47,946.03 and 21,149.10 is: 29,174.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    34,756.90 : 47,946.03 = 21,149.10 : x
  2. Step 2: Convert to fraction form
    34,756.90/47,946.03 = 21,149.10/x
  3. Step 3: Cross multiply
    34,756.90x = 47,946.03 × 21,149.10
  4. Step 4: Simplify right side
    34,756.90x = 1,014,015,303.76
  5. Step 5: Solve for x
    x = 1,014,015,303.76/34,756.90
  6. Step 6: Final answer
    x = 29,174.51

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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.