Home / 21,779.00-30,043.95-14,229.75

Finding the Fourth Proportional to 21,779.00, 30,043.95 and 14,229.75

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Solution

The fourth proportional to 21,779.00, 30,043.95 and 14,229.75 is: 19,629.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,779.00 : 30,043.95 = 14,229.75 : x
  2. Step 2: Convert to fraction form
    21,779.00/30,043.95 = 14,229.75/x
  3. Step 3: Cross multiply
    21,779.00x = 30,043.95 × 14,229.75
  4. Step 4: Simplify right side
    21,779.00x = 427,517,897.51
  5. Step 5: Solve for x
    x = 427,517,897.51/21,779.00
  6. Step 6: Final answer
    x = 19,629.83

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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.