Home / 30,123.15-41,573.79-21,502.71

Finding the Fourth Proportional to 30,123.15, 41,573.79 and 21,502.71

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Solution

The fourth proportional to 30,123.15, 41,573.79 and 21,502.71 is: 29,676.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,123.15 : 41,573.79 = 21,502.71 : x
  2. Step 2: Convert to fraction form
    30,123.15/41,573.79 = 21,502.71/x
  3. Step 3: Cross multiply
    30,123.15x = 41,573.79 × 21,502.71
  4. Step 4: Simplify right side
    30,123.15x = 893,949,149.97
  5. Step 5: Solve for x
    x = 893,949,149.97/30,123.15
  6. Step 6: Final answer
    x = 29,676.48

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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.