Home / 30,527.07-42,127.78-19,910.61

Finding the Fourth Proportional to 30,527.07, 42,127.78 and 19,910.61

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Solution

The fourth proportional to 30,527.07, 42,127.78 and 19,910.61 is: 27,476.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,527.07 : 42,127.78 = 19,910.61 : x
  2. Step 2: Convert to fraction form
    30,527.07/42,127.78 = 19,910.61/x
  3. Step 3: Cross multiply
    30,527.07x = 42,127.78 × 19,910.61
  4. Step 4: Simplify right side
    30,527.07x = 838,789,747.97
  5. Step 5: Solve for x
    x = 838,789,747.97/30,527.07
  6. Step 6: Final answer
    x = 27,476.92

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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.