Home / 30,215.97-45,400.50-19,127.88

Finding the Fourth Proportional to 30,215.97, 45,400.50 and 19,127.88

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Solution

The fourth proportional to 30,215.97, 45,400.50 and 19,127.88 is: 28,740.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,215.97 : 45,400.50 = 19,127.88 : x
  2. Step 2: Convert to fraction form
    30,215.97/45,400.50 = 19,127.88/x
  3. Step 3: Cross multiply
    30,215.97x = 45,400.50 × 19,127.88
  4. Step 4: Simplify right side
    30,215.97x = 868,415,315.94
  5. Step 5: Solve for x
    x = 868,415,315.94/30,215.97
  6. Step 6: Final answer
    x = 28,740.28

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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.