Home / 19,128.30-26,398.08-11,175.18

Finding the Fourth Proportional to 19,128.30, 26,398.08 and 11,175.18

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Solution

The fourth proportional to 19,128.30, 26,398.08 and 11,175.18 is: 15,422.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,128.30 : 26,398.08 = 11,175.18 : x
  2. Step 2: Convert to fraction form
    19,128.30/26,398.08 = 11,175.18/x
  3. Step 3: Cross multiply
    19,128.30x = 26,398.08 × 11,175.18
  4. Step 4: Simplify right side
    19,128.30x = 295,003,295.65
  5. Step 5: Solve for x
    x = 295,003,295.65/19,128.30
  6. Step 6: Final answer
    x = 15,422.35

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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.