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Finding the Fourth Proportional to 30,391.16, 45,571.68 and 9,326.16

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Solution

The fourth proportional to 30,391.16, 45,571.68 and 9,326.16 is: 13,984.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,391.16 : 45,571.68 = 9,326.16 : x
  2. Step 2: Convert to fraction form
    30,391.16/45,571.68 = 9,326.16/x
  3. Step 3: Cross multiply
    30,391.16x = 45,571.68 × 9,326.16
  4. Step 4: Simplify right side
    30,391.16x = 425,008,779.15
  5. Step 5: Solve for x
    x = 425,008,779.15/30,391.16
  6. Step 6: Final answer
    x = 13,984.62

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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.