Home / 27,663.83-38,145.78-18,695.76

Finding the Fourth Proportional to 27,663.83, 38,145.78 and 18,695.76

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Solution

The fourth proportional to 27,663.83, 38,145.78 and 18,695.76 is: 25,779.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,663.83 : 38,145.78 = 18,695.76 : x
  2. Step 2: Convert to fraction form
    27,663.83/38,145.78 = 18,695.76/x
  3. Step 3: Cross multiply
    27,663.83x = 38,145.78 × 18,695.76
  4. Step 4: Simplify right side
    27,663.83x = 713,164,204.85
  5. Step 5: Solve for x
    x = 713,164,204.85/27,663.83
  6. Step 6: Final answer
    x = 25,779.66

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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.