Home / 12,345.60-18,514.35-4,553.40

Finding the Fourth Proportional to 12,345.60, 18,514.35 and 4,553.40

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Solution

The fourth proportional to 12,345.60, 18,514.35 and 4,553.40 is: 6,828.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,345.60 : 18,514.35 = 4,553.40 : x
  2. Step 2: Convert to fraction form
    12,345.60/18,514.35 = 4,553.40/x
  3. Step 3: Cross multiply
    12,345.60x = 18,514.35 × 4,553.40
  4. Step 4: Simplify right side
    12,345.60x = 84,303,241.29
  5. Step 5: Solve for x
    x = 84,303,241.29/12,345.60
  6. Step 6: Final answer
    x = 6,828.61

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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.