Home / 13,389.31-18,477.73-8,083.10

Finding the Fourth Proportional to 13,389.31, 18,477.73 and 8,083.10

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Solution

The fourth proportional to 13,389.31, 18,477.73 and 8,083.10 is: 11,154.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,389.31 : 18,477.73 = 8,083.10 : x
  2. Step 2: Convert to fraction form
    13,389.31/18,477.73 = 8,083.10/x
  3. Step 3: Cross multiply
    13,389.31x = 18,477.73 × 8,083.10
  4. Step 4: Simplify right side
    13,389.31x = 149,357,339.36
  5. Step 5: Solve for x
    x = 149,357,339.36/13,389.31
  6. Step 6: Final answer
    x = 11,154.97

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1.5x scale

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.