Home / 27,906.10-38,511.12-15,159.28

Finding the Fourth Proportional to 27,906.10, 38,511.12 and 15,159.28

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Solution

The fourth proportional to 27,906.10, 38,511.12 and 15,159.28 is: 20,920.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,906.10 : 38,511.12 = 15,159.28 : x
  2. Step 2: Convert to fraction form
    27,906.10/38,511.12 = 15,159.28/x
  3. Step 3: Cross multiply
    27,906.10x = 38,511.12 × 15,159.28
  4. Step 4: Simplify right side
    27,906.10x = 583,800,851.19
  5. Step 5: Solve for x
    x = 583,800,851.19/27,906.10
  6. Step 6: Final answer
    x = 20,920.19

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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.