Home / 21,071.86-31,598.98-8,583.46

Finding the Fourth Proportional to 21,071.86, 31,598.98 and 8,583.46

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Solution

The fourth proportional to 21,071.86, 31,598.98 and 8,583.46 is: 12,871.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,071.86 : 31,598.98 = 8,583.46 : x
  2. Step 2: Convert to fraction form
    21,071.86/31,598.98 = 8,583.46/x
  3. Step 3: Cross multiply
    21,071.86x = 31,598.98 × 8,583.46
  4. Step 4: Simplify right side
    21,071.86x = 271,228,580.87
  5. Step 5: Solve for x
    x = 271,228,580.87/21,071.86
  6. Step 6: Final answer
    x = 12,871.60

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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.