Home / 11,319.83-16,979.71-9,638.30

Finding the Fourth Proportional to 11,319.83, 16,979.71 and 9,638.30

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Solution

The fourth proportional to 11,319.83, 16,979.71 and 9,638.30 is: 14,457.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,319.83 : 16,979.71 = 9,638.30 : x
  2. Step 2: Convert to fraction form
    11,319.83/16,979.71 = 9,638.30/x
  3. Step 3: Cross multiply
    11,319.83x = 16,979.71 × 9,638.30
  4. Step 4: Simplify right side
    11,319.83x = 163,655,527.56
  5. Step 5: Solve for x
    x = 163,655,527.56/11,319.83
  6. Step 6: Final answer
    x = 14,457.42

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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.