Home / 27,808.58-38,370.00-15,871.61

Finding the Fourth Proportional to 27,808.58, 38,370.00 and 15,871.61

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Solution

The fourth proportional to 27,808.58, 38,370.00 and 15,871.61 is: 21,899.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,808.58 : 38,370.00 = 15,871.61 : x
  2. Step 2: Convert to fraction form
    27,808.58/38,370.00 = 15,871.61/x
  3. Step 3: Cross multiply
    27,808.58x = 38,370.00 × 15,871.61
  4. Step 4: Simplify right side
    27,808.58x = 608,993,831.14
  5. Step 5: Solve for x
    x = 608,993,831.14/27,808.58
  6. Step 6: Final answer
    x = 21,899.49

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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.