Home / 27,681.73-38,199.38-15,744.81

Finding the Fourth Proportional to 27,681.73, 38,199.38 and 15,744.81

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Solution

The fourth proportional to 27,681.73, 38,199.38 and 15,744.81 is: 21,727.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,681.73 : 38,199.38 = 15,744.81 : x
  2. Step 2: Convert to fraction form
    27,681.73/38,199.38 = 15,744.81/x
  3. Step 3: Cross multiply
    27,681.73x = 38,199.38 × 15,744.81
  4. Step 4: Simplify right side
    27,681.73x = 601,441,980.22
  5. Step 5: Solve for x
    x = 601,441,980.22/27,681.73
  6. Step 6: Final answer
    x = 21,727.04

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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.