Home / 15,462.12-21,337.88-8,388.60

Finding the Fourth Proportional to 15,462.12, 21,337.88 and 8,388.60

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Solution

The fourth proportional to 15,462.12, 21,337.88 and 8,388.60 is: 11,576.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,462.12 : 21,337.88 = 8,388.60 : x
  2. Step 2: Convert to fraction form
    15,462.12/21,337.88 = 8,388.60/x
  3. Step 3: Cross multiply
    15,462.12x = 21,337.88 × 8,388.60
  4. Step 4: Simplify right side
    15,462.12x = 178,994,940.17
  5. Step 5: Solve for x
    x = 178,994,940.17/15,462.12
  6. Step 6: Final answer
    x = 11,576.35

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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.