Home / 20,543.40-30,771.90-17,087.40

Finding the Fourth Proportional to 20,543.40, 30,771.90 and 17,087.40

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Solution

The fourth proportional to 20,543.40, 30,771.90 and 17,087.40 is: 25,595.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,543.40 : 30,771.90 = 17,087.40 : x
  2. Step 2: Convert to fraction form
    20,543.40/30,771.90 = 17,087.40/x
  3. Step 3: Cross multiply
    20,543.40x = 30,771.90 × 17,087.40
  4. Step 4: Simplify right side
    20,543.40x = 525,811,764.06
  5. Step 5: Solve for x
    x = 525,811,764.06/20,543.40
  6. Step 6: Final answer
    x = 25,595.17

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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.