Home / 20,543.04-30,814.56-11,771.92

Finding the Fourth Proportional to 20,543.04, 30,814.56 and 11,771.92

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Solution

The fourth proportional to 20,543.04, 30,814.56 and 11,771.92 is: 17,657.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,543.04 : 30,814.56 = 11,771.92 : x
  2. Step 2: Convert to fraction form
    20,543.04/30,814.56 = 11,771.92/x
  3. Step 3: Cross multiply
    20,543.04x = 30,814.56 × 11,771.92
  4. Step 4: Simplify right side
    20,543.04x = 362,746,535.16
  5. Step 5: Solve for x
    x = 362,746,535.16/20,543.04
  6. Step 6: Final answer
    x = 17,657.88

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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.