Home / 19,190.40-26,603.52-18,139.20

Finding the Fourth Proportional to 19,190.40, 26,603.52 and 18,139.20

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Solution

The fourth proportional to 19,190.40, 26,603.52 and 18,139.20 is: 25,146.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,190.40 : 26,603.52 = 18,139.20 : x
  2. Step 2: Convert to fraction form
    19,190.40/26,603.52 = 18,139.20/x
  3. Step 3: Cross multiply
    19,190.40x = 26,603.52 × 18,139.20
  4. Step 4: Simplify right side
    19,190.40x = 482,566,569.98
  5. Step 5: Solve for x
    x = 482,566,569.98/19,190.40
  6. Step 6: Final answer
    x = 25,146.25

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.39) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.