Home / 12,225.39-16,871.44-6,920.10

Finding the Fourth Proportional to 12,225.39, 16,871.44 and 6,920.10

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Solution

The fourth proportional to 12,225.39, 16,871.44 and 6,920.10 is: 9,549.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,225.39 : 16,871.44 = 6,920.10 : x
  2. Step 2: Convert to fraction form
    12,225.39/16,871.44 = 6,920.10/x
  3. Step 3: Cross multiply
    12,225.39x = 16,871.44 × 6,920.10
  4. Step 4: Simplify right side
    12,225.39x = 116,751,967.59
  5. Step 5: Solve for x
    x = 116,751,967.59/12,225.39
  6. Step 6: Final answer
    x = 9,549.96

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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.