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Finding the Fourth Proportional to 30,364.60, 45,530.70 and 12,814.60

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Solution

The fourth proportional to 30,364.60, 45,530.70 and 12,814.60 is: 19,215.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,364.60 : 45,530.70 = 12,814.60 : x
  2. Step 2: Convert to fraction form
    30,364.60/45,530.70 = 12,814.60/x
  3. Step 3: Cross multiply
    30,364.60x = 45,530.70 × 12,814.60
  4. Step 4: Simplify right side
    30,364.60x = 583,457,708.22
  5. Step 5: Solve for x
    x = 583,457,708.22/30,364.60
  6. Step 6: Final answer
    x = 19,215.06

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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.