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Finding the Fourth Proportional to 30,648.65, 45,956.30 and 9,579.60

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Solution

The fourth proportional to 30,648.65, 45,956.30 and 9,579.60 is: 14,364.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,648.65 : 45,956.30 = 9,579.60 : x
  2. Step 2: Convert to fraction form
    30,648.65/45,956.30 = 9,579.60/x
  3. Step 3: Cross multiply
    30,648.65x = 45,956.30 × 9,579.60
  4. Step 4: Simplify right side
    30,648.65x = 440,242,923.58
  5. Step 5: Solve for x
    x = 440,242,923.58/30,648.65
  6. Step 6: Final answer
    x = 14,364.19

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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.