Home / 30,552.99-42,164.79-17,128.56

Finding the Fourth Proportional to 30,552.99, 42,164.79 and 17,128.56

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Solution

The fourth proportional to 30,552.99, 42,164.79 and 17,128.56 is: 23,638.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,552.99 : 42,164.79 = 17,128.56 : x
  2. Step 2: Convert to fraction form
    30,552.99/42,164.79 = 17,128.56/x
  3. Step 3: Cross multiply
    30,552.99x = 42,164.79 × 17,128.56
  4. Step 4: Simplify right side
    30,552.99x = 722,222,135.40
  5. Step 5: Solve for x
    x = 722,222,135.40/30,552.99
  6. Step 6: Final answer
    x = 23,638.35

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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.