Home / 19,800.25-29,707.21-12,395.89

Finding the Fourth Proportional to 19,800.25, 29,707.21 and 12,395.89

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Solution

The fourth proportional to 19,800.25, 29,707.21 and 12,395.89 is: 18,598.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,800.25 : 29,707.21 = 12,395.89 : x
  2. Step 2: Convert to fraction form
    19,800.25/29,707.21 = 12,395.89/x
  3. Step 3: Cross multiply
    19,800.25x = 29,707.21 × 12,395.89
  4. Step 4: Simplify right side
    19,800.25x = 368,247,123.17
  5. Step 5: Solve for x
    x = 368,247,123.17/19,800.25
  6. Step 6: Final answer
    x = 18,598.11

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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.