Home / 30,551.72-42,163-17,127.28

Finding the Fourth Proportional to 30,551.72, 42,163 and 17,127.28

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Solution

The fourth proportional to 30,551.72, 42,163 and 17,127.28 is: 23,636.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,551.72 : 42,163 = 17,127.28 : x
  2. Step 2: Convert to fraction form
    30,551.72/42,163 = 17,127.28/x
  3. Step 3: Cross multiply
    30,551.72x = 42,163 × 17,127.28
  4. Step 4: Simplify right side
    30,551.72x = 722,137,506.64
  5. Step 5: Solve for x
    x = 722,137,506.64/30,551.72
  6. Step 6: Final answer
    x = 23,636.56

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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.