Home / 12,898.21-19,192.85-12,854.47

Finding the Fourth Proportional to 12,898.21, 19,192.85 and 12,854.47

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Solution

The fourth proportional to 12,898.21, 19,192.85 and 12,854.47 is: 19,127.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,898.21 : 19,192.85 = 12,854.47 : x
  2. Step 2: Convert to fraction form
    12,898.21/19,192.85 = 12,854.47/x
  3. Step 3: Cross multiply
    12,898.21x = 19,192.85 × 12,854.47
  4. Step 4: Simplify right side
    12,898.21x = 246,713,914.54
  5. Step 5: Solve for x
    x = 246,713,914.54/12,898.21
  6. Step 6: Final answer
    x = 19,127.76

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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.