Home / 27,860.13-38,457.69-18,911.64

Finding the Fourth Proportional to 27,860.13, 38,457.69 and 18,911.64

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Solution

The fourth proportional to 27,860.13, 38,457.69 and 18,911.64 is: 26,105.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,860.13 : 38,457.69 = 18,911.64 : x
  2. Step 2: Convert to fraction form
    27,860.13/38,457.69 = 18,911.64/x
  3. Step 3: Cross multiply
    27,860.13x = 38,457.69 × 18,911.64
  4. Step 4: Simplify right side
    27,860.13x = 727,297,988.51
  5. Step 5: Solve for x
    x = 727,297,988.51/27,860.13
  6. Step 6: Final answer
    x = 26,105.33

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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.