Home / 30,685.06-42,373.11-19,374.58

Finding the Fourth Proportional to 30,685.06, 42,373.11 and 19,374.58

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Solution

The fourth proportional to 30,685.06, 42,373.11 and 19,374.58 is: 26,754.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,685.06 : 42,373.11 = 19,374.58 : x
  2. Step 2: Convert to fraction form
    30,685.06/42,373.11 = 19,374.58/x
  3. Step 3: Cross multiply
    30,685.06x = 42,373.11 × 19,374.58
  4. Step 4: Simplify right side
    30,685.06x = 820,961,209.54
  5. Step 5: Solve for x
    x = 820,961,209.54/30,685.06
  6. Step 6: Final answer
    x = 26,754.43

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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.