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Finding the Fourth Proportional to 30,619.50, 45,929.25 and 9,843

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Solution

The fourth proportional to 30,619.50, 45,929.25 and 9,843 is: 14,764.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,619.50 : 45,929.25 = 9,843 : x
  2. Step 2: Convert to fraction form
    30,619.50/45,929.25 = 9,843/x
  3. Step 3: Cross multiply
    30,619.50x = 45,929.25 × 9,843
  4. Step 4: Simplify right side
    30,619.50x = 452,081,607.75
  5. Step 5: Solve for x
    x = 452,081,607.75/30,619.50
  6. Step 6: Final answer
    x = 14,764.50

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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.