Home / 28,445.31-39,252.20-15,869.79

Finding the Fourth Proportional to 28,445.31, 39,252.20 and 15,869.79

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Solution

The fourth proportional to 28,445.31, 39,252.20 and 15,869.79 is: 21,899.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,445.31 : 39,252.20 = 15,869.79 : x
  2. Step 2: Convert to fraction form
    28,445.31/39,252.20 = 15,869.79/x
  3. Step 3: Cross multiply
    28,445.31x = 39,252.20 × 15,869.79
  4. Step 4: Simplify right side
    28,445.31x = 622,924,091.69
  5. Step 5: Solve for x
    x = 622,924,091.69/28,445.31
  6. Step 6: Final answer
    x = 21,899.01

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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.