Home / 13,679.28-18,876.96-8,646.24

Finding the Fourth Proportional to 13,679.28, 18,876.96 and 8,646.24

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Solution

The fourth proportional to 13,679.28, 18,876.96 and 8,646.24 is: 11,931.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,679.28 : 18,876.96 = 8,646.24 : x
  2. Step 2: Convert to fraction form
    13,679.28/18,876.96 = 8,646.24/x
  3. Step 3: Cross multiply
    13,679.28x = 18,876.96 × 8,646.24
  4. Step 4: Simplify right side
    13,679.28x = 163,214,726.63
  5. Step 5: Solve for x
    x = 163,214,726.63/13,679.28
  6. Step 6: Final answer
    x = 11,931.53

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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.