Home / 18,345.57-25,316.99-10,388.53

Finding the Fourth Proportional to 18,345.57, 25,316.99 and 10,388.53

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Solution

The fourth proportional to 18,345.57, 25,316.99 and 10,388.53 is: 14,336.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,345.57 : 25,316.99 = 10,388.53 : x
  2. Step 2: Convert to fraction form
    18,345.57/25,316.99 = 10,388.53/x
  3. Step 3: Cross multiply
    18,345.57x = 25,316.99 × 10,388.53
  4. Step 4: Simplify right side
    18,345.57x = 263,006,310.12
  5. Step 5: Solve for x
    x = 263,006,310.12/18,345.57
  6. Step 6: Final answer
    x = 14,336.23

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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.