Home / 30,825.28-42,538.89-16,678.13

Finding the Fourth Proportional to 30,825.28, 42,538.89 and 16,678.13

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Solution

The fourth proportional to 30,825.28, 42,538.89 and 16,678.13 is: 23,015.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,825.28 : 42,538.89 = 16,678.13 : x
  2. Step 2: Convert to fraction form
    30,825.28/42,538.89 = 16,678.13/x
  3. Step 3: Cross multiply
    30,825.28x = 42,538.89 × 16,678.13
  4. Step 4: Simplify right side
    30,825.28x = 709,468,987.32
  5. Step 5: Solve for x
    x = 709,468,987.32/30,825.28
  6. Step 6: Final answer
    x = 23,015.82

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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.