Home / 30,359.60-45,528.44-12,830.78

Finding the Fourth Proportional to 30,359.60, 45,528.44 and 12,830.78

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Solution

The fourth proportional to 30,359.60, 45,528.44 and 12,830.78 is: 19,241.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,359.60 : 45,528.44 = 12,830.78 : x
  2. Step 2: Convert to fraction form
    30,359.60/45,528.44 = 12,830.78/x
  3. Step 3: Cross multiply
    30,359.60x = 45,528.44 × 12,830.78
  4. Step 4: Simplify right side
    30,359.60x = 584,165,397.38
  5. Step 5: Solve for x
    x = 584,165,397.38/30,359.60
  6. Step 6: Final answer
    x = 19,241.54

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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.