Home / 13,700.38-20,451.45-12,039.64

Finding the Fourth Proportional to 13,700.38, 20,451.45 and 12,039.64

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Solution

The fourth proportional to 13,700.38, 20,451.45 and 12,039.64 is: 17,972.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,700.38 : 20,451.45 = 12,039.64 : x
  2. Step 2: Convert to fraction form
    13,700.38/20,451.45 = 12,039.64/x
  3. Step 3: Cross multiply
    13,700.38x = 20,451.45 × 12,039.64
  4. Step 4: Simplify right side
    13,700.38x = 246,228,095.48
  5. Step 5: Solve for x
    x = 246,228,095.48/13,700.38
  6. Step 6: Final answer
    x = 17,972.36

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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.