Home / 19,779.14-27,295.20-13,491.50

Finding the Fourth Proportional to 19,779.14, 27,295.20 and 13,491.50

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Solution

The fourth proportional to 19,779.14, 27,295.20 and 13,491.50 is: 18,618.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,779.14 : 27,295.20 = 13,491.50 : x
  2. Step 2: Convert to fraction form
    19,779.14/27,295.20 = 13,491.50/x
  3. Step 3: Cross multiply
    19,779.14x = 27,295.20 × 13,491.50
  4. Step 4: Simplify right side
    19,779.14x = 368,253,190.80
  5. Step 5: Solve for x
    x = 368,253,190.80/19,779.14
  6. Step 6: Final answer
    x = 18,618.26

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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.