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Finding the Fourth Proportional to 28,379.00, 42,566.91 and 8,656.00

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Solution

The fourth proportional to 28,379.00, 42,566.91 and 8,656.00 is: 12,983.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,379.00 : 42,566.91 = 8,656.00 : x
  2. Step 2: Convert to fraction form
    28,379.00/42,566.91 = 8,656.00/x
  3. Step 3: Cross multiply
    28,379.00x = 42,566.91 × 8,656.00
  4. Step 4: Simplify right side
    28,379.00x = 368,459,193.71
  5. Step 5: Solve for x
    x = 368,459,193.71/28,379.00
  6. Step 6: Final answer
    x = 12,983.52

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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.