Home / 18,345.29-25,317.09-10,387.34

Finding the Fourth Proportional to 18,345.29, 25,317.09 and 10,387.34

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Solution

The fourth proportional to 18,345.29, 25,317.09 and 10,387.34 is: 14,334.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,345.29 : 25,317.09 = 10,387.34 : x
  2. Step 2: Convert to fraction form
    18,345.29/25,317.09 = 10,387.34/x
  3. Step 3: Cross multiply
    18,345.29x = 25,317.09 × 10,387.34
  4. Step 4: Simplify right side
    18,345.29x = 262,977,221.64
  5. Step 5: Solve for x
    x = 262,977,221.64/18,345.29
  6. Step 6: Final answer
    x = 14,334.86

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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.