Home / 15,903.12-23,809.32-12,621

Finding the Fourth Proportional to 15,903.12, 23,809.32 and 12,621

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Solution

The fourth proportional to 15,903.12, 23,809.32 and 12,621 is: 18,895.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,903.12 : 23,809.32 = 12,621 : x
  2. Step 2: Convert to fraction form
    15,903.12/23,809.32 = 12,621/x
  3. Step 3: Cross multiply
    15,903.12x = 23,809.32 × 12,621
  4. Step 4: Simplify right side
    15,903.12x = 300,497,427.72
  5. Step 5: Solve for x
    x = 300,497,427.72/15,903.12
  6. Step 6: Final answer
    x = 18,895.50

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.