Home / 30,449.28-42,016.08-17,021.28

Finding the Fourth Proportional to 30,449.28, 42,016.08 and 17,021.28

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Solution

The fourth proportional to 30,449.28, 42,016.08 and 17,021.28 is: 23,487.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,449.28 : 42,016.08 = 17,021.28 : x
  2. Step 2: Convert to fraction form
    30,449.28/42,016.08 = 17,021.28/x
  3. Step 3: Cross multiply
    30,449.28x = 42,016.08 × 17,021.28
  4. Step 4: Simplify right side
    30,449.28x = 715,167,462.18
  5. Step 5: Solve for x
    x = 715,167,462.18/30,449.28
  6. Step 6: Final answer
    x = 23,487.17

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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.