Home / 25,779.80-38,669.70-14,115.80

Finding the Fourth Proportional to 25,779.80, 38,669.70 and 14,115.80

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Solution

The fourth proportional to 25,779.80, 38,669.70 and 14,115.80 is: 21,173.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    25,779.80 : 38,669.70 = 14,115.80 : x
  2. Step 2: Convert to fraction form
    25,779.80/38,669.70 = 14,115.80/x
  3. Step 3: Cross multiply
    25,779.80x = 38,669.70 × 14,115.80
  4. Step 4: Simplify right side
    25,779.80x = 545,853,751.26
  5. Step 5: Solve for x
    x = 545,853,751.26/25,779.80
  6. Step 6: Final answer
    x = 21,173.70

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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.