Home / 12,411.40-18,612.18-9,783.96

Finding the Fourth Proportional to 12,411.40, 18,612.18 and 9,783.96

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Solution

The fourth proportional to 12,411.40, 18,612.18 and 9,783.96 is: 14,672.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,411.40 : 18,612.18 = 9,783.96 : x
  2. Step 2: Convert to fraction form
    12,411.40/18,612.18 = 9,783.96/x
  3. Step 3: Cross multiply
    12,411.40x = 18,612.18 × 9,783.96
  4. Step 4: Simplify right side
    12,411.40x = 182,100,731.57
  5. Step 5: Solve for x
    x = 182,100,731.57/12,411.40
  6. Step 6: Final answer
    x = 14,672.05

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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.