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Finding the Fourth Proportional to 30,194.40, 45,302.40 and 12,669.60

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Solution

The fourth proportional to 30,194.40, 45,302.40 and 12,669.60 is: 19,008.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,194.40 : 45,302.40 = 12,669.60 : x
  2. Step 2: Convert to fraction form
    30,194.40/45,302.40 = 12,669.60/x
  3. Step 3: Cross multiply
    30,194.40x = 45,302.40 × 12,669.60
  4. Step 4: Simplify right side
    30,194.40x = 573,963,287.04
  5. Step 5: Solve for x
    x = 573,963,287.04/30,194.40
  6. Step 6: Final answer
    x = 19,008.93

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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.