Home / 19,115.80-28,690.13-7,437.22

Finding the Fourth Proportional to 19,115.80, 28,690.13 and 7,437.22

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Solution

The fourth proportional to 19,115.80, 28,690.13 and 7,437.22 is: 11,162.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,115.80 : 28,690.13 = 7,437.22 : x
  2. Step 2: Convert to fraction form
    19,115.80/28,690.13 = 7,437.22/x
  3. Step 3: Cross multiply
    19,115.80x = 28,690.13 × 7,437.22
  4. Step 4: Simplify right side
    19,115.80x = 213,374,755.51
  5. Step 5: Solve for x
    x = 213,374,755.51/19,115.80
  6. Step 6: Final answer
    x = 11,162.22

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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.