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Finding the Fourth Proportional to 28,025.16, 42,037.89 and 8,303.88

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Solution

The fourth proportional to 28,025.16, 42,037.89 and 8,303.88 is: 12,455.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,025.16 : 42,037.89 = 8,303.88 : x
  2. Step 2: Convert to fraction form
    28,025.16/42,037.89 = 8,303.88/x
  3. Step 3: Cross multiply
    28,025.16x = 42,037.89 × 8,303.88
  4. Step 4: Simplify right side
    28,025.16x = 349,077,594.01
  5. Step 5: Solve for x
    x = 349,077,594.01/28,025.16
  6. Step 6: Final answer
    x = 12,455.86

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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.