Home / 27,813.72-38,390.98-15,883.56

Finding the Fourth Proportional to 27,813.72, 38,390.98 and 15,883.56

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Solution

The fourth proportional to 27,813.72, 38,390.98 and 15,883.56 is: 21,923.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,813.72 : 38,390.98 = 15,883.56 : x
  2. Step 2: Convert to fraction form
    27,813.72/38,390.98 = 15,883.56/x
  3. Step 3: Cross multiply
    27,813.72x = 38,390.98 × 15,883.56
  4. Step 4: Simplify right side
    27,813.72x = 609,785,434.29
  5. Step 5: Solve for x
    x = 609,785,434.29/27,813.72
  6. Step 6: Final answer
    x = 21,923.91

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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.