Home / 14,169.27-21,143.20-12,693.45

Finding the Fourth Proportional to 14,169.27, 21,143.20 and 12,693.45

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Solution

The fourth proportional to 14,169.27, 21,143.20 and 12,693.45 is: 18,941.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,169.27 : 21,143.20 = 12,693.45 : x
  2. Step 2: Convert to fraction form
    14,169.27/21,143.20 = 12,693.45/x
  3. Step 3: Cross multiply
    14,169.27x = 21,143.20 × 12,693.45
  4. Step 4: Simplify right side
    14,169.27x = 268,380,120.31
  5. Step 5: Solve for x
    x = 268,380,120.31/14,169.27
  6. Step 6: Final answer
    x = 18,941.00

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.