Home / 30,861.58-46,213.28-21,360.72

Finding the Fourth Proportional to 30,861.58, 46,213.28 and 21,360.72

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Solution

The fourth proportional to 30,861.58, 46,213.28 and 21,360.72 is: 31,986.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,861.58 : 46,213.28 = 21,360.72 : x
  2. Step 2: Convert to fraction form
    30,861.58/46,213.28 = 21,360.72/x
  3. Step 3: Cross multiply
    30,861.58x = 46,213.28 × 21,360.72
  4. Step 4: Simplify right side
    30,861.58x = 987,148,934.36
  5. Step 5: Solve for x
    x = 987,148,934.36/30,861.58
  6. Step 6: Final answer
    x = 31,986.34

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.