Home / 12,251.16-16,905.60-7,215.60

Finding the Fourth Proportional to 12,251.16, 16,905.60 and 7,215.60

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Solution

The fourth proportional to 12,251.16, 16,905.60 and 7,215.60 is: 9,956.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,251.16 : 16,905.60 = 7,215.60 : x
  2. Step 2: Convert to fraction form
    12,251.16/16,905.60 = 7,215.60/x
  3. Step 3: Cross multiply
    12,251.16x = 16,905.60 × 7,215.60
  4. Step 4: Simplify right side
    12,251.16x = 121,984,047.36
  5. Step 5: Solve for x
    x = 121,984,047.36/12,251.16
  6. Step 6: Final answer
    x = 9,956.94

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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.