Home / 30,825.91-42,539.81-16,678.76

Finding the Fourth Proportional to 30,825.91, 42,539.81 and 16,678.76

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Solution

The fourth proportional to 30,825.91, 42,539.81 and 16,678.76 is: 23,016.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,825.91 : 42,539.81 = 16,678.76 : x
  2. Step 2: Convert to fraction form
    30,825.91/42,539.81 = 16,678.76/x
  3. Step 3: Cross multiply
    30,825.91x = 42,539.81 × 16,678.76
  4. Step 4: Simplify right side
    30,825.91x = 709,510,985.34
  5. Step 5: Solve for x
    x = 709,510,985.34/30,825.91
  6. Step 6: Final answer
    x = 23,016.71

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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.