Home / 19,131.12-28,691.40-13,568.08

Finding the Fourth Proportional to 19,131.12, 28,691.40 and 13,568.08

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Solution

The fourth proportional to 19,131.12, 28,691.40 and 13,568.08 is: 20,348.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,131.12 : 28,691.40 = 13,568.08 : x
  2. Step 2: Convert to fraction form
    19,131.12/28,691.40 = 13,568.08/x
  3. Step 3: Cross multiply
    19,131.12x = 28,691.40 × 13,568.08
  4. Step 4: Simplify right side
    19,131.12x = 389,287,210.51
  5. Step 5: Solve for x
    x = 389,287,210.51/19,131.12
  6. Step 6: Final answer
    x = 20,348.38

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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.