Home / 18,345.89-25,317.19-10,388.05

Finding the Fourth Proportional to 18,345.89, 25,317.19 and 10,388.05

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Solution

The fourth proportional to 18,345.89, 25,317.19 and 10,388.05 is: 14,335.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,345.89 : 25,317.19 = 10,388.05 : x
  2. Step 2: Convert to fraction form
    18,345.89/25,317.19 = 10,388.05/x
  3. Step 3: Cross multiply
    18,345.89x = 25,317.19 × 10,388.05
  4. Step 4: Simplify right side
    18,345.89x = 262,996,235.58
  5. Step 5: Solve for x
    x = 262,996,235.58/18,345.89
  6. Step 6: Final answer
    x = 14,335.43

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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.