Home / 21,208.40-31,770.98-17,263.90

Finding the Fourth Proportional to 21,208.40, 31,770.98 and 17,263.90

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Solution

The fourth proportional to 21,208.40, 31,770.98 and 17,263.90 is: 25,861.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,208.40 : 31,770.98 = 17,263.90 : x
  2. Step 2: Convert to fraction form
    21,208.40/31,770.98 = 17,263.90/x
  3. Step 3: Cross multiply
    21,208.40x = 31,770.98 × 17,263.90
  4. Step 4: Simplify right side
    21,208.40x = 548,490,985.35
  5. Step 5: Solve for x
    x = 548,490,985.35/21,208.40
  6. Step 6: Final answer
    x = 25,861.98

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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.