Home / 21,800.64-32,669.71-12,421.25

Finding the Fourth Proportional to 21,800.64, 32,669.71 and 12,421.25

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Solution

The fourth proportional to 21,800.64, 32,669.71 and 12,421.25 is: 18,614.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,800.64 : 32,669.71 = 12,421.25 : x
  2. Step 2: Convert to fraction form
    21,800.64/32,669.71 = 12,421.25/x
  3. Step 3: Cross multiply
    21,800.64x = 32,669.71 × 12,421.25
  4. Step 4: Simplify right side
    21,800.64x = 405,798,635.34
  5. Step 5: Solve for x
    x = 405,798,635.34/21,800.64
  6. Step 6: Final answer
    x = 18,614.07

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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.