Home / 19,171.80-28,747.95-8,774.64

Finding the Fourth Proportional to 19,171.80, 28,747.95 and 8,774.64

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Solution

The fourth proportional to 19,171.80, 28,747.95 and 8,774.64 is: 13,157.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,171.80 : 28,747.95 = 8,774.64 : x
  2. Step 2: Convert to fraction form
    19,171.80/28,747.95 = 8,774.64/x
  3. Step 3: Cross multiply
    19,171.80x = 28,747.95 × 8,774.64
  4. Step 4: Simplify right side
    19,171.80x = 252,252,911.99
  5. Step 5: Solve for x
    x = 252,252,911.99/19,171.80
  6. Step 6: Final answer
    x = 13,157.50

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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.