Home / 38,830.40-58,245.60-12,539

Finding the Fourth Proportional to 38,830.40, 58,245.60 and 12,539

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Solution

The fourth proportional to 38,830.40, 58,245.60 and 12,539 is: 18,808.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,830.40 : 58,245.60 = 12,539 : x
  2. Step 2: Convert to fraction form
    38,830.40/58,245.60 = 12,539/x
  3. Step 3: Cross multiply
    38,830.40x = 58,245.60 × 12,539
  4. Step 4: Simplify right side
    38,830.40x = 730,341,578.40
  5. Step 5: Solve for x
    x = 730,341,578.40/38,830.40
  6. Step 6: Final answer
    x = 18,808.50

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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.