Home / 11,712.63-17,566.29-3,390.78

Finding the Fourth Proportional to 11,712.63, 17,566.29 and 3,390.78

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Solution

The fourth proportional to 11,712.63, 17,566.29 and 3,390.78 is: 5,085.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,712.63 : 17,566.29 = 3,390.78 : x
  2. Step 2: Convert to fraction form
    11,712.63/17,566.29 = 3,390.78/x
  3. Step 3: Cross multiply
    11,712.63x = 17,566.29 × 3,390.78
  4. Step 4: Simplify right side
    11,712.63x = 59,563,424.81
  5. Step 5: Solve for x
    x = 59,563,424.81/11,712.63
  6. Step 6: Final answer
    x = 5,085.40

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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.