Home / 18,313.31-25,272.38-9,929.81

Finding the Fourth Proportional to 18,313.31, 25,272.38 and 9,929.81

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Solution

The fourth proportional to 18,313.31, 25,272.38 and 9,929.81 is: 13,703.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,313.31 : 25,272.38 = 9,929.81 : x
  2. Step 2: Convert to fraction form
    18,313.31/25,272.38 = 9,929.81/x
  3. Step 3: Cross multiply
    18,313.31x = 25,272.38 × 9,929.81
  4. Step 4: Simplify right side
    18,313.31x = 250,950,019.65
  5. Step 5: Solve for x
    x = 250,950,019.65/18,313.31
  6. Step 6: Final answer
    x = 13,703.15

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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.