Home / 21,975.96-30,323.52-12,543.24

Finding the Fourth Proportional to 21,975.96, 30,323.52 and 12,543.24

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Solution

The fourth proportional to 21,975.96, 30,323.52 and 12,543.24 is: 17,307.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,975.96 : 30,323.52 = 12,543.24 : x
  2. Step 2: Convert to fraction form
    21,975.96/30,323.52 = 12,543.24/x
  3. Step 3: Cross multiply
    21,975.96x = 30,323.52 × 12,543.24
  4. Step 4: Simplify right side
    21,975.96x = 380,355,189.00
  5. Step 5: Solve for x
    x = 380,355,189.00/21,975.96
  6. Step 6: Final answer
    x = 17,307.78

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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.