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Finding the Fourth Proportional to 34,259.89, 47,276.03 and 20,829.28

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Solution

The fourth proportional to 34,259.89, 47,276.03 and 20,829.28 is: 28,742.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    34,259.89 : 47,276.03 = 20,829.28 : x
  2. Step 2: Convert to fraction form
    34,259.89/47,276.03 = 20,829.28/x
  3. Step 3: Cross multiply
    34,259.89x = 47,276.03 × 20,829.28
  4. Step 4: Simplify right side
    34,259.89x = 984,725,600.04
  5. Step 5: Solve for x
    x = 984,725,600.04/34,259.89
  6. Step 6: Final answer
    x = 28,742.81

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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.