Home / 12,290.55-18,438.86-4,394.58

Finding the Fourth Proportional to 12,290.55, 18,438.86 and 4,394.58

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Solution

The fourth proportional to 12,290.55, 18,438.86 and 4,394.58 is: 6,592.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,290.55 : 18,438.86 = 4,394.58 : x
  2. Step 2: Convert to fraction form
    12,290.55/18,438.86 = 4,394.58/x
  3. Step 3: Cross multiply
    12,290.55x = 18,438.86 × 4,394.58
  4. Step 4: Simplify right side
    12,290.55x = 81,031,045.38
  5. Step 5: Solve for x
    x = 81,031,045.38/12,290.55
  6. Step 6: Final answer
    x = 6,592.96

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.