Home / 21,806.55-30,090.42-12,246.93

Finding the Fourth Proportional to 21,806.55, 30,090.42 and 12,246.93

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Solution

The fourth proportional to 21,806.55, 30,090.42 and 12,246.93 is: 16,899.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,806.55 : 30,090.42 = 12,246.93 : x
  2. Step 2: Convert to fraction form
    21,806.55/30,090.42 = 12,246.93/x
  3. Step 3: Cross multiply
    21,806.55x = 30,090.42 × 12,246.93
  4. Step 4: Simplify right side
    21,806.55x = 368,515,267.41
  5. Step 5: Solve for x
    x = 368,515,267.41/21,806.55
  6. Step 6: Final answer
    x = 16,899.29

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1.5x scale

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.