Home / 30,120.68-41,561.70-18,934.76

Finding the Fourth Proportional to 30,120.68, 41,561.70 and 18,934.76

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Solution

The fourth proportional to 30,120.68, 41,561.70 and 18,934.76 is: 26,126.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,120.68 : 41,561.70 = 18,934.76 : x
  2. Step 2: Convert to fraction form
    30,120.68/41,561.70 = 18,934.76/x
  3. Step 3: Cross multiply
    30,120.68x = 41,561.70 × 18,934.76
  4. Step 4: Simplify right side
    30,120.68x = 786,960,814.69
  5. Step 5: Solve for x
    x = 786,960,814.69/30,120.68
  6. Step 6: Final answer
    x = 26,126.93

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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.