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Finding the Fourth Proportional to 28,551.52, 42,816.64 and 9,826.32

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Solution

The fourth proportional to 28,551.52, 42,816.64 and 9,826.32 is: 14,735.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,551.52 : 42,816.64 = 9,826.32 : x
  2. Step 2: Convert to fraction form
    28,551.52/42,816.64 = 9,826.32/x
  3. Step 3: Cross multiply
    28,551.52x = 42,816.64 × 9,826.32
  4. Step 4: Simplify right side
    28,551.52x = 420,730,005.96
  5. Step 5: Solve for x
    x = 420,730,005.96/28,551.52
  6. Step 6: Final answer
    x = 14,735.82

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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.