Home / 21,762.44-30,031.80-12,071.78

Finding the Fourth Proportional to 21,762.44, 30,031.80 and 12,071.78

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Solution

The fourth proportional to 21,762.44, 30,031.80 and 12,071.78 is: 16,658.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,762.44 : 30,031.80 = 12,071.78 : x
  2. Step 2: Convert to fraction form
    21,762.44/30,031.80 = 12,071.78/x
  3. Step 3: Cross multiply
    21,762.44x = 30,031.80 × 12,071.78
  4. Step 4: Simplify right side
    21,762.44x = 362,537,282.60
  5. Step 5: Solve for x
    x = 362,537,282.60/21,762.44
  6. Step 6: Final answer
    x = 16,658.85

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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.