Home / 21,690.86-29,950.36-16,647.10

Finding the Fourth Proportional to 21,690.86, 29,950.36 and 16,647.10

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Solution

The fourth proportional to 21,690.86, 29,950.36 and 16,647.10 is: 22,986.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,690.86 : 29,950.36 = 16,647.10 : x
  2. Step 2: Convert to fraction form
    21,690.86/29,950.36 = 16,647.10/x
  3. Step 3: Cross multiply
    21,690.86x = 29,950.36 × 16,647.10
  4. Step 4: Simplify right side
    21,690.86x = 498,586,521.46
  5. Step 5: Solve for x
    x = 498,586,521.46/21,690.86
  6. Step 6: Final answer
    x = 22,986.02

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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.