Home / 27,869.36-38,457.72-15,933.20

Finding the Fourth Proportional to 27,869.36, 38,457.72 and 15,933.20

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Solution

The fourth proportional to 27,869.36, 38,457.72 and 15,933.20 is: 21,986.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,869.36 : 38,457.72 = 15,933.20 : x
  2. Step 2: Convert to fraction form
    27,869.36/38,457.72 = 15,933.20/x
  3. Step 3: Cross multiply
    27,869.36x = 38,457.72 × 15,933.20
  4. Step 4: Simplify right side
    27,869.36x = 612,754,544.30
  5. Step 5: Solve for x
    x = 612,754,544.30/27,869.36
  6. Step 6: Final answer
    x = 21,986.67

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Double scale
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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.