Home / 12,826-17,688.54-8,345.62

Finding the Fourth Proportional to 12,826, 17,688.54 and 8,345.62

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Solution

The fourth proportional to 12,826, 17,688.54 and 8,345.62 is: 11,509.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,826 : 17,688.54 = 8,345.62 : x
  2. Step 2: Convert to fraction form
    12,826/17,688.54 = 8,345.62/x
  3. Step 3: Cross multiply
    12,826x = 17,688.54 × 8,345.62
  4. Step 4: Simplify right side
    12,826x = 147,621,833.19
  5. Step 5: Solve for x
    x = 147,621,833.19/12,826
  6. Step 6: Final answer
    x = 11,509.58

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.