Home / 19,036.32-28,551.36-5,186.40

Finding the Fourth Proportional to 19,036.32, 28,551.36 and 5,186.40

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Solution

The fourth proportional to 19,036.32, 28,551.36 and 5,186.40 is: 7,778.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,036.32 : 28,551.36 = 5,186.40 : x
  2. Step 2: Convert to fraction form
    19,036.32/28,551.36 = 5,186.40/x
  3. Step 3: Cross multiply
    19,036.32x = 28,551.36 × 5,186.40
  4. Step 4: Simplify right side
    19,036.32x = 148,078,773.50
  5. Step 5: Solve for x
    x = 148,078,773.50/19,036.32
  6. Step 6: Final answer
    x = 7,778.75

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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.