Home / 25,434.80-38,148.60-7,906.40

Finding the Fourth Proportional to 25,434.80, 38,148.60 and 7,906.40

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Solution

The fourth proportional to 25,434.80, 38,148.60 and 7,906.40 is: 11,858.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    25,434.80 : 38,148.60 = 7,906.40 : x
  2. Step 2: Convert to fraction form
    25,434.80/38,148.60 = 7,906.40/x
  3. Step 3: Cross multiply
    25,434.80x = 38,148.60 × 7,906.40
  4. Step 4: Simplify right side
    25,434.80x = 301,618,091.04
  5. Step 5: Solve for x
    x = 301,618,091.04/25,434.80
  6. Step 6: Final answer
    x = 11,858.48

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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.