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Finding the Fourth Proportional to 19,159.50, 28,739.25 and 5,308.50

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Solution

The fourth proportional to 19,159.50, 28,739.25 and 5,308.50 is: 7,962.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,159.50 : 28,739.25 = 5,308.50 : x
  2. Step 2: Convert to fraction form
    19,159.50/28,739.25 = 5,308.50/x
  3. Step 3: Cross multiply
    19,159.50x = 28,739.25 × 5,308.50
  4. Step 4: Simplify right side
    19,159.50x = 152,562,308.63
  5. Step 5: Solve for x
    x = 152,562,308.63/19,159.50
  6. Step 6: Final answer
    x = 7,962.75

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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.