Home / 10,985.21-16,486.67-5,721.83

Finding the Fourth Proportional to 10,985.21, 16,486.67 and 5,721.83

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Solution

The fourth proportional to 10,985.21, 16,486.67 and 5,721.83 is: 8,587.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,985.21 : 16,486.67 = 5,721.83 : x
  2. Step 2: Convert to fraction form
    10,985.21/16,486.67 = 5,721.83/x
  3. Step 3: Cross multiply
    10,985.21x = 16,486.67 × 5,721.83
  4. Step 4: Simplify right side
    10,985.21x = 94,333,811.96
  5. Step 5: Solve for x
    x = 94,333,811.96/10,985.21
  6. Step 6: Final answer
    x = 8,587.35

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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.