Home / 27,718.31-38,206.35-21,657.96

Finding the Fourth Proportional to 27,718.31, 38,206.35 and 21,657.96

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Solution

The fourth proportional to 27,718.31, 38,206.35 and 21,657.96 is: 29,852.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,718.31 : 38,206.35 = 21,657.96 : x
  2. Step 2: Convert to fraction form
    27,718.31/38,206.35 = 21,657.96/x
  3. Step 3: Cross multiply
    27,718.31x = 38,206.35 × 21,657.96
  4. Step 4: Simplify right side
    27,718.31x = 827,471,600.05
  5. Step 5: Solve for x
    x = 827,471,600.05/27,718.31
  6. Step 6: Final answer
    x = 29,852.89

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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.