Home / 30,428.60-45,613.74-12,874.28

Finding the Fourth Proportional to 30,428.60, 45,613.74 and 12,874.28

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Solution

The fourth proportional to 30,428.60, 45,613.74 and 12,874.28 is: 19,299.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,428.60 : 45,613.74 = 12,874.28 : x
  2. Step 2: Convert to fraction form
    30,428.60/45,613.74 = 12,874.28/x
  3. Step 3: Cross multiply
    30,428.60x = 45,613.74 × 12,874.28
  4. Step 4: Simplify right side
    30,428.60x = 587,244,060.61
  5. Step 5: Solve for x
    x = 587,244,060.61/30,428.60
  6. Step 6: Final answer
    x = 19,299.08

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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.