Home / 19,115.24-28,681.32-7,429.34

Finding the Fourth Proportional to 19,115.24, 28,681.32 and 7,429.34

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Solution

The fourth proportional to 19,115.24, 28,681.32 and 7,429.34 is: 11,147.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,115.24 : 28,681.32 = 7,429.34 : x
  2. Step 2: Convert to fraction form
    19,115.24/28,681.32 = 7,429.34/x
  3. Step 3: Cross multiply
    19,115.24x = 28,681.32 × 7,429.34
  4. Step 4: Simplify right side
    19,115.24x = 213,083,277.93
  5. Step 5: Solve for x
    x = 213,083,277.93/19,115.24
  6. Step 6: Final answer
    x = 11,147.30

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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.