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Finding the Fourth Proportional to 21,359.94, 32,037.48 and 8,203.08

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Solution

The fourth proportional to 21,359.94, 32,037.48 and 8,203.08 is: 12,303.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,359.94 : 32,037.48 = 8,203.08 : x
  2. Step 2: Convert to fraction form
    21,359.94/32,037.48 = 8,203.08/x
  3. Step 3: Cross multiply
    21,359.94x = 32,037.48 × 8,203.08
  4. Step 4: Simplify right side
    21,359.94x = 262,806,011.44
  5. Step 5: Solve for x
    x = 262,806,011.44/21,359.94
  6. Step 6: Final answer
    x = 12,303.69

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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.