Home / 28,459.20-39,273.64-15,883.96

Finding the Fourth Proportional to 28,459.20, 39,273.64 and 15,883.96

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Solution

The fourth proportional to 28,459.20, 39,273.64 and 15,883.96 is: 21,919.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,459.20 : 39,273.64 = 15,883.96 : x
  2. Step 2: Convert to fraction form
    28,459.20/39,273.64 = 15,883.96/x
  3. Step 3: Cross multiply
    28,459.20x = 39,273.64 × 15,883.96
  4. Step 4: Simplify right side
    28,459.20x = 623,820,926.81
  5. Step 5: Solve for x
    x = 623,820,926.81/28,459.20
  6. Step 6: Final answer
    x = 21,919.83

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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.