Home / 28,674.68-43,026.10-12,890.86

Finding the Fourth Proportional to 28,674.68, 43,026.10 and 12,890.86

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Solution

The fourth proportional to 28,674.68, 43,026.10 and 12,890.86 is: 19,342.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,674.68 : 43,026.10 = 12,890.86 : x
  2. Step 2: Convert to fraction form
    28,674.68/43,026.10 = 12,890.86/x
  3. Step 3: Cross multiply
    28,674.68x = 43,026.10 × 12,890.86
  4. Step 4: Simplify right side
    28,674.68x = 554,643,216.32
  5. Step 5: Solve for x
    x = 554,643,216.32/28,674.68
  6. Step 6: Final answer
    x = 19,342.62

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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.