Home / 27,722.40-38,259.18-15,789.48

Finding the Fourth Proportional to 27,722.40, 38,259.18 and 15,789.48

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Solution

The fourth proportional to 27,722.40, 38,259.18 and 15,789.48 is: 21,790.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,722.40 : 38,259.18 = 15,789.48 : x
  2. Step 2: Convert to fraction form
    27,722.40/38,259.18 = 15,789.48/x
  3. Step 3: Cross multiply
    27,722.40x = 38,259.18 × 15,789.48
  4. Step 4: Simplify right side
    27,722.40x = 604,092,557.43
  5. Step 5: Solve for x
    x = 604,092,557.43/27,722.40
  6. Step 6: Final answer
    x = 21,790.77

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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.