Home / 15,609.20-21,539.40-8,535.60

Finding the Fourth Proportional to 15,609.20, 21,539.40 and 8,535.60

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Solution

The fourth proportional to 15,609.20, 21,539.40 and 8,535.60 is: 11,778.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,609.20 : 21,539.40 = 8,535.60 : x
  2. Step 2: Convert to fraction form
    15,609.20/21,539.40 = 8,535.60/x
  3. Step 3: Cross multiply
    15,609.20x = 21,539.40 × 8,535.60
  4. Step 4: Simplify right side
    15,609.20x = 183,851,702.64
  5. Step 5: Solve for x
    x = 183,851,702.64/15,609.20
  6. Step 6: Final answer
    x = 11,778.42

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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.