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Finding the Fourth Proportional to 25,205.60, 37,808.40 and 13,930.40

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Solution

The fourth proportional to 25,205.60, 37,808.40 and 13,930.40 is: 20,895.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    25,205.60 : 37,808.40 = 13,930.40 : x
  2. Step 2: Convert to fraction form
    25,205.60/37,808.40 = 13,930.40/x
  3. Step 3: Cross multiply
    25,205.60x = 37,808.40 × 13,930.40
  4. Step 4: Simplify right side
    25,205.60x = 526,686,135.36
  5. Step 5: Solve for x
    x = 526,686,135.36/25,205.60
  6. Step 6: Final answer
    x = 20,895.60

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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.