Home / 25,829.60-38,648.40-18,917.60

Finding the Fourth Proportional to 25,829.60, 38,648.40 and 18,917.60

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Solution

The fourth proportional to 25,829.60, 38,648.40 and 18,917.60 is: 28,306.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    25,829.60 : 38,648.40 = 18,917.60 : x
  2. Step 2: Convert to fraction form
    25,829.60/38,648.40 = 18,917.60/x
  3. Step 3: Cross multiply
    25,829.60x = 38,648.40 × 18,917.60
  4. Step 4: Simplify right side
    25,829.60x = 731,134,971.84
  5. Step 5: Solve for x
    x = 731,134,971.84/25,829.60
  6. Step 6: Final answer
    x = 28,306.09

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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.