Home / 19,718.28-27,211.56-11,765.16

Finding the Fourth Proportional to 19,718.28, 27,211.56 and 11,765.16

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Solution

The fourth proportional to 19,718.28, 27,211.56 and 11,765.16 is: 16,236.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,718.28 : 27,211.56 = 11,765.16 : x
  2. Step 2: Convert to fraction form
    19,718.28/27,211.56 = 11,765.16/x
  3. Step 3: Cross multiply
    19,718.28x = 27,211.56 × 11,765.16
  4. Step 4: Simplify right side
    19,718.28x = 320,148,357.25
  5. Step 5: Solve for x
    x = 320,148,357.25/19,718.28
  6. Step 6: Final answer
    x = 16,236.12

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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.