Home / 13,330.09-18,394.45-7,664.55

Finding the Fourth Proportional to 13,330.09, 18,394.45 and 7,664.55

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Solution

The fourth proportional to 13,330.09, 18,394.45 and 7,664.55 is: 10,576.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,330.09 : 18,394.45 = 7,664.55 : x
  2. Step 2: Convert to fraction form
    13,330.09/18,394.45 = 7,664.55/x
  3. Step 3: Cross multiply
    13,330.09x = 18,394.45 × 7,664.55
  4. Step 4: Simplify right side
    13,330.09x = 140,985,181.75
  5. Step 5: Solve for x
    x = 140,985,181.75/13,330.09
  6. Step 6: Final answer
    x = 10,576.46

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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.