Home / 30,345.43-45,517.89-9,285.38

Finding the Fourth Proportional to 30,345.43, 45,517.89 and 9,285.38

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Solution

The fourth proportional to 30,345.43, 45,517.89 and 9,285.38 is: 13,927.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,345.43 : 45,517.89 = 9,285.38 : x
  2. Step 2: Convert to fraction form
    30,345.43/45,517.89 = 9,285.38/x
  3. Step 3: Cross multiply
    30,345.43x = 45,517.89 × 9,285.38
  4. Step 4: Simplify right side
    30,345.43x = 422,650,905.45
  5. Step 5: Solve for x
    x = 422,650,905.45/30,345.43
  6. Step 6: Final answer
    x = 13,927.99

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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.