Home / 27,867.64-38,457.30-15,120.83

Finding the Fourth Proportional to 27,867.64, 38,457.30 and 15,120.83

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Solution

The fourth proportional to 27,867.64, 38,457.30 and 15,120.83 is: 20,866.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,867.64 : 38,457.30 = 15,120.83 : x
  2. Step 2: Convert to fraction form
    27,867.64/38,457.30 = 15,120.83/x
  3. Step 3: Cross multiply
    27,867.64x = 38,457.30 × 15,120.83
  4. Step 4: Simplify right side
    27,867.64x = 581,506,046.57
  5. Step 5: Solve for x
    x = 581,506,046.57/27,867.64
  6. Step 6: Final answer
    x = 20,866.71

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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.