Home / 31,320.60-43,207.72-19,379.58

Finding the Fourth Proportional to 31,320.60, 43,207.72 and 19,379.58

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Solution

The fourth proportional to 31,320.60, 43,207.72 and 19,379.58 is: 26,734.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,320.60 : 43,207.72 = 19,379.58 : x
  2. Step 2: Convert to fraction form
    31,320.60/43,207.72 = 19,379.58/x
  3. Step 3: Cross multiply
    31,320.60x = 43,207.72 × 19,379.58
  4. Step 4: Simplify right side
    31,320.60x = 837,347,466.36
  5. Step 5: Solve for x
    x = 837,347,466.36/31,320.60
  6. Step 6: Final answer
    x = 26,734.72

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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.