Home / 12,929.10-19,394.19-7,723.50

Finding the Fourth Proportional to 12,929.10, 19,394.19 and 7,723.50

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Solution

The fourth proportional to 12,929.10, 19,394.19 and 7,723.50 is: 11,585.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,929.10 : 19,394.19 = 7,723.50 : x
  2. Step 2: Convert to fraction form
    12,929.10/19,394.19 = 7,723.50/x
  3. Step 3: Cross multiply
    12,929.10x = 19,394.19 × 7,723.50
  4. Step 4: Simplify right side
    12,929.10x = 149,791,026.47
  5. Step 5: Solve for x
    x = 149,791,026.47/12,929.10
  6. Step 6: Final answer
    x = 11,585.57

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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.