Home / 21,749.25-32,628.39-8,421.90

Finding the Fourth Proportional to 21,749.25, 32,628.39 and 8,421.90

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Solution

The fourth proportional to 21,749.25, 32,628.39 and 8,421.90 is: 12,634.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,749.25 : 32,628.39 = 8,421.90 : x
  2. Step 2: Convert to fraction form
    21,749.25/32,628.39 = 8,421.90/x
  3. Step 3: Cross multiply
    21,749.25x = 32,628.39 × 8,421.90
  4. Step 4: Simplify right side
    21,749.25x = 274,793,037.74
  5. Step 5: Solve for x
    x = 274,793,037.74/21,749.25
  6. Step 6: Final answer
    x = 12,634.60

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.