Home / 30,999.88-42,779.98-16,852.68

Finding the Fourth Proportional to 30,999.88, 42,779.98 and 16,852.68

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Solution

The fourth proportional to 30,999.88, 42,779.98 and 16,852.68 is: 23,256.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,999.88 : 42,779.98 = 16,852.68 : x
  2. Step 2: Convert to fraction form
    30,999.88/42,779.98 = 16,852.68/x
  3. Step 3: Cross multiply
    30,999.88x = 42,779.98 × 16,852.68
  4. Step 4: Simplify right side
    30,999.88x = 720,957,313.35
  5. Step 5: Solve for x
    x = 720,957,313.35/30,999.88
  6. Step 6: Final answer
    x = 23,256.78

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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.