Home / 21,713.50-29,964.64-12,281.86

Finding the Fourth Proportional to 21,713.50, 29,964.64 and 12,281.86

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Solution

The fourth proportional to 21,713.50, 29,964.64 and 12,281.86 is: 16,948.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,713.50 : 29,964.64 = 12,281.86 : x
  2. Step 2: Convert to fraction form
    21,713.50/29,964.64 = 12,281.86/x
  3. Step 3: Cross multiply
    21,713.50x = 29,964.64 × 12,281.86
  4. Step 4: Simplify right side
    21,713.50x = 368,021,513.43
  5. Step 5: Solve for x
    x = 368,021,513.43/21,713.50
  6. Step 6: Final answer
    x = 16,948.97

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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.