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Finding the Fourth Proportional to 28,280.90, 42,410.55 and 8,552.90

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Solution

The fourth proportional to 28,280.90, 42,410.55 and 8,552.90 is: 12,826.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,280.90 : 42,410.55 = 8,552.90 : x
  2. Step 2: Convert to fraction form
    28,280.90/42,410.55 = 8,552.90/x
  3. Step 3: Cross multiply
    28,280.90x = 42,410.55 × 8,552.90
  4. Step 4: Simplify right side
    28,280.90x = 362,733,193.10
  5. Step 5: Solve for x
    x = 362,733,193.10/28,280.90
  6. Step 6: Final answer
    x = 12,826.08

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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.