Home / 28,451.89-39,263.61-15,876.64

Finding the Fourth Proportional to 28,451.89, 39,263.61 and 15,876.64

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Solution

The fourth proportional to 28,451.89, 39,263.61 and 15,876.64 is: 21,909.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,451.89 : 39,263.61 = 15,876.64 : x
  2. Step 2: Convert to fraction form
    28,451.89/39,263.61 = 15,876.64/x
  3. Step 3: Cross multiply
    28,451.89x = 39,263.61 × 15,876.64
  4. Step 4: Simplify right side
    28,451.89x = 623,374,201.07
  5. Step 5: Solve for x
    x = 623,374,201.07/28,451.89
  6. Step 6: Final answer
    x = 21,909.76

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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.