Home / 29,929.70-41,320.18-19,871.72

Finding the Fourth Proportional to 29,929.70, 41,320.18 and 19,871.72

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Solution

The fourth proportional to 29,929.70, 41,320.18 and 19,871.72 is: 27,434.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    29,929.70 : 41,320.18 = 19,871.72 : x
  2. Step 2: Convert to fraction form
    29,929.70/41,320.18 = 19,871.72/x
  3. Step 3: Cross multiply
    29,929.70x = 41,320.18 × 19,871.72
  4. Step 4: Simplify right side
    29,929.70x = 821,103,047.31
  5. Step 5: Solve for x
    x = 821,103,047.31/29,929.70
  6. Step 6: Final answer
    x = 27,434.39

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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.