Home / 18,128.39-27,167.29-9,790.45

Finding the Fourth Proportional to 18,128.39, 27,167.29 and 9,790.45

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Solution

The fourth proportional to 18,128.39, 27,167.29 and 9,790.45 is: 14,672.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,128.39 : 27,167.29 = 9,790.45 : x
  2. Step 2: Convert to fraction form
    18,128.39/27,167.29 = 9,790.45/x
  3. Step 3: Cross multiply
    18,128.39x = 27,167.29 × 9,790.45
  4. Step 4: Simplify right side
    18,128.39x = 265,979,901.99
  5. Step 5: Solve for x
    x = 265,979,901.99/18,128.39
  6. Step 6: Final answer
    x = 14,672.01

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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.