Home / 15,608.79-21,540.20-8,535.87

Finding the Fourth Proportional to 15,608.79, 21,540.20 and 8,535.87

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Solution

The fourth proportional to 15,608.79, 21,540.20 and 8,535.87 is: 11,779.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,608.79 : 21,540.20 = 8,535.87 : x
  2. Step 2: Convert to fraction form
    15,608.79/21,540.20 = 8,535.87/x
  3. Step 3: Cross multiply
    15,608.79x = 21,540.20 × 8,535.87
  4. Step 4: Simplify right side
    15,608.79x = 183,864,304.29
  5. Step 5: Solve for x
    x = 183,864,304.29/15,608.79
  6. Step 6: Final answer
    x = 11,779.54

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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.