Home / 27,918.24-41,891.12-13,128.48

Finding the Fourth Proportional to 27,918.24, 41,891.12 and 13,128.48

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Solution

The fourth proportional to 27,918.24, 41,891.12 and 13,128.48 is: 19,699.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,918.24 : 41,891.12 = 13,128.48 : x
  2. Step 2: Convert to fraction form
    27,918.24/41,891.12 = 13,128.48/x
  3. Step 3: Cross multiply
    27,918.24x = 41,891.12 × 13,128.48
  4. Step 4: Simplify right side
    27,918.24x = 549,966,731.10
  5. Step 5: Solve for x
    x = 549,966,731.10/27,918.24
  6. Step 6: Final answer
    x = 19,699.19

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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.