Home / 12,686.86-19,009.32-4,362.40

Finding the Fourth Proportional to 12,686.86, 19,009.32 and 4,362.40

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Solution

The fourth proportional to 12,686.86, 19,009.32 and 4,362.40 is: 6,536.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,686.86 : 19,009.32 = 4,362.40 : x
  2. Step 2: Convert to fraction form
    12,686.86/19,009.32 = 4,362.40/x
  3. Step 3: Cross multiply
    12,686.86x = 19,009.32 × 4,362.40
  4. Step 4: Simplify right side
    12,686.86x = 82,926,257.57
  5. Step 5: Solve for x
    x = 82,926,257.57/12,686.86
  6. Step 6: Final answer
    x = 6,536.39

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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.