Home / 21,890.86-30,185.36-14,804.98

Finding the Fourth Proportional to 21,890.86, 30,185.36 and 14,804.98

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Solution

The fourth proportional to 21,890.86, 30,185.36 and 14,804.98 is: 20,414.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,890.86 : 30,185.36 = 14,804.98 : x
  2. Step 2: Convert to fraction form
    21,890.86/30,185.36 = 14,804.98/x
  3. Step 3: Cross multiply
    21,890.86x = 30,185.36 × 14,804.98
  4. Step 4: Simplify right side
    21,890.86x = 446,893,557.12
  5. Step 5: Solve for x
    x = 446,893,557.12/21,890.86
  6. Step 6: Final answer
    x = 20,414.62

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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.