Home / 19,981.74-30,006.63-19,145.82

Finding the Fourth Proportional to 19,981.74, 30,006.63 and 19,145.82

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Solution

The fourth proportional to 19,981.74, 30,006.63 and 19,145.82 is: 28,751.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,981.74 : 30,006.63 = 19,145.82 : x
  2. Step 2: Convert to fraction form
    19,981.74/30,006.63 = 19,145.82/x
  3. Step 3: Cross multiply
    19,981.74x = 30,006.63 × 19,145.82
  4. Step 4: Simplify right side
    19,981.74x = 574,501,536.79
  5. Step 5: Solve for x
    x = 574,501,536.79/19,981.74
  6. Step 6: Final answer
    x = 28,751.33

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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.