Home / 12,929.26-19,402.38-7,090

Finding the Fourth Proportional to 12,929.26, 19,402.38 and 7,090

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Solution

The fourth proportional to 12,929.26, 19,402.38 and 7,090 is: 10,639.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,929.26 : 19,402.38 = 7,090 : x
  2. Step 2: Convert to fraction form
    12,929.26/19,402.38 = 7,090/x
  3. Step 3: Cross multiply
    12,929.26x = 19,402.38 × 7,090
  4. Step 4: Simplify right side
    12,929.26x = 137,562,874.20
  5. Step 5: Solve for x
    x = 137,562,874.20/12,929.26
  6. Step 6: Final answer
    x = 10,639.66

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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.