Home / 12,934.81-19,289.01-12,816.57

Finding the Fourth Proportional to 12,934.81, 19,289.01 and 12,816.57

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Solution

The fourth proportional to 12,934.81, 19,289.01 and 12,816.57 is: 19,112.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,934.81 : 19,289.01 = 12,816.57 : x
  2. Step 2: Convert to fraction form
    12,934.81/19,289.01 = 12,816.57/x
  3. Step 3: Cross multiply
    12,934.81x = 19,289.01 × 12,816.57
  4. Step 4: Simplify right side
    12,934.81x = 247,218,946.90
  5. Step 5: Solve for x
    x = 247,218,946.90/12,934.81
  6. Step 6: Final answer
    x = 19,112.68

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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.