Home / 30,584.60-45,905.70-18,920.60

Finding the Fourth Proportional to 30,584.60, 45,905.70 and 18,920.60

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Solution

The fourth proportional to 30,584.60, 45,905.70 and 18,920.60 is: 28,398.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,584.60 : 45,905.70 = 18,920.60 : x
  2. Step 2: Convert to fraction form
    30,584.60/45,905.70 = 18,920.60/x
  3. Step 3: Cross multiply
    30,584.60x = 45,905.70 × 18,920.60
  4. Step 4: Simplify right side
    30,584.60x = 868,563,387.42
  5. Step 5: Solve for x
    x = 868,563,387.42/30,584.60
  6. Step 6: Final answer
    x = 28,398.72

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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.