Home / 38,861.60-53,581.20-28,775.84

Finding the Fourth Proportional to 38,861.60, 53,581.20 and 28,775.84

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Solution

The fourth proportional to 38,861.60, 53,581.20 and 28,775.84 is: 39,675.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,861.60 : 53,581.20 = 28,775.84 : x
  2. Step 2: Convert to fraction form
    38,861.60/53,581.20 = 28,775.84/x
  3. Step 3: Cross multiply
    38,861.60x = 53,581.20 × 28,775.84
  4. Step 4: Simplify right side
    38,861.60x = 1,541,844,038.21
  5. Step 5: Solve for x
    x = 1,541,844,038.21/38,861.60
  6. Step 6: Final answer
    x = 39,675.26

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.