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Finding the Fourth Proportional to 18,363.69, 25,345.41 and 10,406.25

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Solution

The fourth proportional to 18,363.69, 25,345.41 and 10,406.25 is: 14,362.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,363.69 : 25,345.41 = 10,406.25 : x
  2. Step 2: Convert to fraction form
    18,363.69/25,345.41 = 10,406.25/x
  3. Step 3: Cross multiply
    18,363.69x = 25,345.41 × 10,406.25
  4. Step 4: Simplify right side
    18,363.69x = 263,750,672.81
  5. Step 5: Solve for x
    x = 263,750,672.81/18,363.69
  6. Step 6: Final answer
    x = 14,362.62

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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.