Home / 12,867.96-19,301.70-4,102.80

Finding the Fourth Proportional to 12,867.96, 19,301.70 and 4,102.80

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Solution

The fourth proportional to 12,867.96, 19,301.70 and 4,102.80 is: 6,154.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,867.96 : 19,301.70 = 4,102.80 : x
  2. Step 2: Convert to fraction form
    12,867.96/19,301.70 = 4,102.80/x
  3. Step 3: Cross multiply
    12,867.96x = 19,301.70 × 4,102.80
  4. Step 4: Simplify right side
    12,867.96x = 79,191,014.76
  5. Step 5: Solve for x
    x = 79,191,014.76/12,867.96
  6. Step 6: Final answer
    x = 6,154.12

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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.