Home / 21,325.86-31,925.61-15,804

Finding the Fourth Proportional to 21,325.86, 31,925.61 and 15,804

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Solution

The fourth proportional to 21,325.86, 31,925.61 and 15,804 is: 23,659.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,325.86 : 31,925.61 = 15,804 : x
  2. Step 2: Convert to fraction form
    21,325.86/31,925.61 = 15,804/x
  3. Step 3: Cross multiply
    21,325.86x = 31,925.61 × 15,804
  4. Step 4: Simplify right side
    21,325.86x = 504,552,340.44
  5. Step 5: Solve for x
    x = 504,552,340.44/21,325.86
  6. Step 6: Final answer
    x = 23,659.18

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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.