Home / 21,800.46-30,090.39-12,853.92

Finding the Fourth Proportional to 21,800.46, 30,090.39 and 12,853.92

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Solution

The fourth proportional to 21,800.46, 30,090.39 and 12,853.92 is: 17,741.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,800.46 : 30,090.39 = 12,853.92 : x
  2. Step 2: Convert to fraction form
    21,800.46/30,090.39 = 12,853.92/x
  3. Step 3: Cross multiply
    21,800.46x = 30,090.39 × 12,853.92
  4. Step 4: Simplify right side
    21,800.46x = 386,779,466.99
  5. Step 5: Solve for x
    x = 386,779,466.99/21,800.46
  6. Step 6: Final answer
    x = 17,741.80

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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.