Home / 18,128.13-27,166.91-9,790.19

Finding the Fourth Proportional to 18,128.13, 27,166.91 and 9,790.19

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Solution

The fourth proportional to 18,128.13, 27,166.91 and 9,790.19 is: 14,671.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,128.13 : 27,166.91 = 9,790.19 : x
  2. Step 2: Convert to fraction form
    18,128.13/27,166.91 = 9,790.19/x
  3. Step 3: Cross multiply
    18,128.13x = 27,166.91 × 9,790.19
  4. Step 4: Simplify right side
    18,128.13x = 265,969,210.61
  5. Step 5: Solve for x
    x = 265,969,210.61/18,128.13
  6. Step 6: Final answer
    x = 14,671.63

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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.