Home / 21,779.04-30,061.92-12,825.92

Finding the Fourth Proportional to 21,779.04, 30,061.92 and 12,825.92

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Solution

The fourth proportional to 21,779.04, 30,061.92 and 12,825.92 is: 17,703.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,779.04 : 30,061.92 = 12,825.92 : x
  2. Step 2: Convert to fraction form
    21,779.04/30,061.92 = 12,825.92/x
  3. Step 3: Cross multiply
    21,779.04x = 30,061.92 × 12,825.92
  4. Step 4: Simplify right side
    21,779.04x = 385,571,780.97
  5. Step 5: Solve for x
    x = 385,571,780.97/21,779.04
  6. Step 6: Final answer
    x = 17,703.80

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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.