Home / 13,659.36-18,854.64-8,070

Finding the Fourth Proportional to 13,659.36, 18,854.64 and 8,070

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Solution

The fourth proportional to 13,659.36, 18,854.64 and 8,070 is: 11,139.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,659.36 : 18,854.64 = 8,070 : x
  2. Step 2: Convert to fraction form
    13,659.36/18,854.64 = 8,070/x
  3. Step 3: Cross multiply
    13,659.36x = 18,854.64 × 8,070
  4. Step 4: Simplify right side
    13,659.36x = 152,156,944.80
  5. Step 5: Solve for x
    x = 152,156,944.80/13,659.36
  6. Step 6: Final answer
    x = 11,139.39

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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.