Home / 15,609.34-21,540.93-8,535.88

Finding the Fourth Proportional to 15,609.34, 21,540.93 and 8,535.88

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Solution

The fourth proportional to 15,609.34, 21,540.93 and 8,535.88 is: 11,779.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,609.34 : 21,540.93 = 8,535.88 : x
  2. Step 2: Convert to fraction form
    15,609.34/21,540.93 = 8,535.88/x
  3. Step 3: Cross multiply
    15,609.34x = 21,540.93 × 8,535.88
  4. Step 4: Simplify right side
    15,609.34x = 183,870,793.57
  5. Step 5: Solve for x
    x = 183,870,793.57/15,609.34
  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.