Home / 31,835.40-43,920.92-19,730.35

Finding the Fourth Proportional to 31,835.40, 43,920.92 and 19,730.35

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Solution

The fourth proportional to 31,835.40, 43,920.92 and 19,730.35 is: 27,220.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,835.40 : 43,920.92 = 19,730.35 : x
  2. Step 2: Convert to fraction form
    31,835.40/43,920.92 = 19,730.35/x
  3. Step 3: Cross multiply
    31,835.40x = 43,920.92 × 19,730.35
  4. Step 4: Simplify right side
    31,835.40x = 866,575,123.92
  5. Step 5: Solve for x
    x = 866,575,123.92/31,835.40
  6. Step 6: Final answer
    x = 27,220.49

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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.