Home / 13,103.59-18,083.40-7,135.36

Finding the Fourth Proportional to 13,103.59, 18,083.40 and 7,135.36

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Solution

The fourth proportional to 13,103.59, 18,083.40 and 7,135.36 is: 9,847.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,103.59 : 18,083.40 = 7,135.36 : x
  2. Step 2: Convert to fraction form
    13,103.59/18,083.40 = 7,135.36/x
  3. Step 3: Cross multiply
    13,103.59x = 18,083.40 × 7,135.36
  4. Step 4: Simplify right side
    13,103.59x = 129,031,569.02
  5. Step 5: Solve for x
    x = 129,031,569.02/13,103.59
  6. Step 6: Final answer
    x = 9,847.04

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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.