Home / 11,725.20-16,205.16-9,392.40

Finding the Fourth Proportional to 11,725.20, 16,205.16 and 9,392.40

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Solution

The fourth proportional to 11,725.20, 16,205.16 and 9,392.40 is: 12,981.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,725.20 : 16,205.16 = 9,392.40 : x
  2. Step 2: Convert to fraction form
    11,725.20/16,205.16 = 9,392.40/x
  3. Step 3: Cross multiply
    11,725.20x = 16,205.16 × 9,392.40
  4. Step 4: Simplify right side
    11,725.20x = 152,205,344.78
  5. Step 5: Solve for x
    x = 152,205,344.78/11,725.20
  6. Step 6: Final answer
    x = 12,981.04

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.