Home / 27,640.51-38,155.26-18,700.14

Finding the Fourth Proportional to 27,640.51, 38,155.26 and 18,700.14

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Solution

The fourth proportional to 27,640.51, 38,155.26 and 18,700.14 is: 25,813.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,640.51 : 38,155.26 = 18,700.14 : x
  2. Step 2: Convert to fraction form
    27,640.51/38,155.26 = 18,700.14/x
  3. Step 3: Cross multiply
    27,640.51x = 38,155.26 × 18,700.14
  4. Step 4: Simplify right side
    27,640.51x = 713,508,703.74
  5. Step 5: Solve for x
    x = 713,508,703.74/27,640.51
  6. Step 6: Final answer
    x = 25,813.88

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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.