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Finding the Fourth Proportional to 28,534.04, 42,784.60 and 8,807.32

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Solution

The fourth proportional to 28,534.04, 42,784.60 and 8,807.32 is: 13,205.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,534.04 : 42,784.60 = 8,807.32 : x
  2. Step 2: Convert to fraction form
    28,534.04/42,784.60 = 8,807.32/x
  3. Step 3: Cross multiply
    28,534.04x = 42,784.60 × 8,807.32
  4. Step 4: Simplify right side
    28,534.04x = 376,817,663.27
  5. Step 5: Solve for x
    x = 376,817,663.27/28,534.04
  6. Step 6: Final answer
    x = 13,205.90

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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.