Home / 27,718.56-38,247.20-15,782.12

Finding the Fourth Proportional to 27,718.56, 38,247.20 and 15,782.12

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Solution

The fourth proportional to 27,718.56, 38,247.20 and 15,782.12 is: 21,776.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,718.56 : 38,247.20 = 15,782.12 : x
  2. Step 2: Convert to fraction form
    27,718.56/38,247.20 = 15,782.12/x
  3. Step 3: Cross multiply
    27,718.56x = 38,247.20 × 15,782.12
  4. Step 4: Simplify right side
    27,718.56x = 603,621,900.06
  5. Step 5: Solve for x
    x = 603,621,900.06/27,718.56
  6. Step 6: Final answer
    x = 21,776.81

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Half scale
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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.