Home / 31,200.36-46,800.06-21,180.30

Finding the Fourth Proportional to 31,200.36, 46,800.06 and 21,180.30

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Solution

The fourth proportional to 31,200.36, 46,800.06 and 21,180.30 is: 31,770.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,200.36 : 46,800.06 = 21,180.30 : x
  2. Step 2: Convert to fraction form
    31,200.36/46,800.06 = 21,180.30/x
  3. Step 3: Cross multiply
    31,200.36x = 46,800.06 × 21,180.30
  4. Step 4: Simplify right side
    31,200.36x = 991,239,310.82
  5. Step 5: Solve for x
    x = 991,239,310.82/31,200.36
  6. Step 6: Final answer
    x = 31,770.12

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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.