Home / 13,077.18-18,046.32-7,108.68

Finding the Fourth Proportional to 13,077.18, 18,046.32 and 7,108.68

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Solution

The fourth proportional to 13,077.18, 18,046.32 and 7,108.68 is: 9,809.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,077.18 : 18,046.32 = 7,108.68 : x
  2. Step 2: Convert to fraction form
    13,077.18/18,046.32 = 7,108.68/x
  3. Step 3: Cross multiply
    13,077.18x = 18,046.32 × 7,108.68
  4. Step 4: Simplify right side
    13,077.18x = 128,285,514.06
  5. Step 5: Solve for x
    x = 128,285,514.06/13,077.18
  6. Step 6: Final answer
    x = 9,809.88

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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.