Home / 13,357.10-18,517.09-12,646.10

Finding the Fourth Proportional to 13,357.10, 18,517.09 and 12,646.10

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Solution

The fourth proportional to 13,357.10, 18,517.09 and 12,646.10 is: 17,531.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,357.10 : 18,517.09 = 12,646.10 : x
  2. Step 2: Convert to fraction form
    13,357.10/18,517.09 = 12,646.10/x
  3. Step 3: Cross multiply
    13,357.10x = 18,517.09 × 12,646.10
  4. Step 4: Simplify right side
    13,357.10x = 234,169,011.51
  5. Step 5: Solve for x
    x = 234,169,011.51/13,357.10
  6. Step 6: Final answer
    x = 17,531.42

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.39) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.