Home / 11,962.20-16,503.30-7,712.40

Finding the Fourth Proportional to 11,962.20, 16,503.30 and 7,712.40

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Solution

The fourth proportional to 11,962.20, 16,503.30 and 7,712.40 is: 10,640.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,962.20 : 16,503.30 = 7,712.40 : x
  2. Step 2: Convert to fraction form
    11,962.20/16,503.30 = 7,712.40/x
  3. Step 3: Cross multiply
    11,962.20x = 16,503.30 × 7,712.40
  4. Step 4: Simplify right side
    11,962.20x = 127,280,050.92
  5. Step 5: Solve for x
    x = 127,280,050.92/11,962.20
  6. Step 6: Final answer
    x = 10,640.19

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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.