Home / 38,085.60-57,122.10-12,784.80

Finding the Fourth Proportional to 38,085.60, 57,122.10 and 12,784.80

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Solution

The fourth proportional to 38,085.60, 57,122.10 and 12,784.80 is: 19,175.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,085.60 : 57,122.10 = 12,784.80 : x
  2. Step 2: Convert to fraction form
    38,085.60/57,122.10 = 12,784.80/x
  3. Step 3: Cross multiply
    38,085.60x = 57,122.10 × 12,784.80
  4. Step 4: Simplify right side
    38,085.60x = 730,294,624.08
  5. Step 5: Solve for x
    x = 730,294,624.08/38,085.60
  6. Step 6: Final answer
    x = 19,175.09

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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.