Home / 21,779.22-30,057.84-12,349.50

Finding the Fourth Proportional to 21,779.22, 30,057.84 and 12,349.50

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Solution

The fourth proportional to 21,779.22, 30,057.84 and 12,349.50 is: 17,043.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,779.22 : 30,057.84 = 12,349.50 : x
  2. Step 2: Convert to fraction form
    21,779.22/30,057.84 = 12,349.50/x
  3. Step 3: Cross multiply
    21,779.22x = 30,057.84 × 12,349.50
  4. Step 4: Simplify right side
    21,779.22x = 371,199,295.08
  5. Step 5: Solve for x
    x = 371,199,295.08/21,779.22
  6. Step 6: Final answer
    x = 17,043.74

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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.