Home / 13,805.34-20,681.86-8,166.14

Finding the Fourth Proportional to 13,805.34, 20,681.86 and 8,166.14

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Solution

The fourth proportional to 13,805.34, 20,681.86 and 8,166.14 is: 12,233.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,805.34 : 20,681.86 = 8,166.14 : x
  2. Step 2: Convert to fraction form
    13,805.34/20,681.86 = 8,166.14/x
  3. Step 3: Cross multiply
    13,805.34x = 20,681.86 × 8,166.14
  4. Step 4: Simplify right side
    13,805.34x = 168,890,964.22
  5. Step 5: Solve for x
    x = 168,890,964.22/13,805.34
  6. Step 6: Final answer
    x = 12,233.74

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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.