Home / 30,825.95-42,539.81-16,678.79

Finding the Fourth Proportional to 30,825.95, 42,539.81 and 16,678.79

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Solution

The fourth proportional to 30,825.95, 42,539.81 and 16,678.79 is: 23,016.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,825.95 : 42,539.81 = 16,678.79 : x
  2. Step 2: Convert to fraction form
    30,825.95/42,539.81 = 16,678.79/x
  3. Step 3: Cross multiply
    30,825.95x = 42,539.81 × 16,678.79
  4. Step 4: Simplify right side
    30,825.95x = 709,512,557.63
  5. Step 5: Solve for x
    x = 709,512,557.63/30,825.95
  6. Step 6: Final answer
    x = 23,016.73

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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.