Home / 19,491.57-29,186.46-12,807.05

Finding the Fourth Proportional to 19,491.57, 29,186.46 and 12,807.05

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Solution

The fourth proportional to 19,491.57, 29,186.46 and 12,807.05 is: 19,177.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,491.57 : 29,186.46 = 12,807.05 : x
  2. Step 2: Convert to fraction form
    19,491.57/29,186.46 = 12,807.05/x
  3. Step 3: Cross multiply
    19,491.57x = 29,186.46 × 12,807.05
  4. Step 4: Simplify right side
    19,491.57x = 373,792,306.61
  5. Step 5: Solve for x
    x = 373,792,306.61/19,491.57
  6. Step 6: Final answer
    x = 19,177.13

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.