Home / 30,512.52-42,111.54-19,932.84

Finding the Fourth Proportional to 30,512.52, 42,111.54 and 19,932.84

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Solution

The fourth proportional to 30,512.52, 42,111.54 and 19,932.84 is: 27,510.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,512.52 : 42,111.54 = 19,932.84 : x
  2. Step 2: Convert to fraction form
    30,512.52/42,111.54 = 19,932.84/x
  3. Step 3: Cross multiply
    30,512.52x = 42,111.54 × 19,932.84
  4. Step 4: Simplify right side
    30,512.52x = 839,402,588.97
  5. Step 5: Solve for x
    x = 839,402,588.97/30,512.52
  6. Step 6: Final answer
    x = 27,510.10

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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.