Home / 21,026.76-31,539.74-5,443.98

Finding the Fourth Proportional to 21,026.76, 31,539.74 and 5,443.98

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Solution

The fourth proportional to 21,026.76, 31,539.74 and 5,443.98 is: 8,165.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,026.76 : 31,539.74 = 5,443.98 : x
  2. Step 2: Convert to fraction form
    21,026.76/31,539.74 = 5,443.98/x
  3. Step 3: Cross multiply
    21,026.76x = 31,539.74 × 5,443.98
  4. Step 4: Simplify right side
    21,026.76x = 171,701,713.77
  5. Step 5: Solve for x
    x = 171,701,713.77/21,026.76
  6. Step 6: Final answer
    x = 8,165.87

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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.