Home / 12,427.10-18,609.50-7,426.40

Finding the Fourth Proportional to 12,427.10, 18,609.50 and 7,426.40

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Solution

The fourth proportional to 12,427.10, 18,609.50 and 7,426.40 is: 11,120.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,427.10 : 18,609.50 = 7,426.40 : x
  2. Step 2: Convert to fraction form
    12,427.10/18,609.50 = 7,426.40/x
  3. Step 3: Cross multiply
    12,427.10x = 18,609.50 × 7,426.40
  4. Step 4: Simplify right side
    12,427.10x = 138,201,590.80
  5. Step 5: Solve for x
    x = 138,201,590.80/12,427.10
  6. Step 6: Final answer
    x = 11,120.98

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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.