Home / 12,385.15-18,551.45-9,740.09

Finding the Fourth Proportional to 12,385.15, 18,551.45 and 9,740.09

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Solution

The fourth proportional to 12,385.15, 18,551.45 and 9,740.09 is: 14,589.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,385.15 : 18,551.45 = 9,740.09 : x
  2. Step 2: Convert to fraction form
    12,385.15/18,551.45 = 9,740.09/x
  3. Step 3: Cross multiply
    12,385.15x = 18,551.45 × 9,740.09
  4. Step 4: Simplify right side
    12,385.15x = 180,692,863.36
  5. Step 5: Solve for x
    x = 180,692,863.36/12,385.15
  6. Step 6: Final answer
    x = 14,589.48

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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.