Home / 30,501.36-42,077.88-17,917.20

Finding the Fourth Proportional to 30,501.36, 42,077.88 and 17,917.20

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Solution

The fourth proportional to 30,501.36, 42,077.88 and 17,917.20 is: 24,717.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,501.36 : 42,077.88 = 17,917.20 : x
  2. Step 2: Convert to fraction form
    30,501.36/42,077.88 = 17,917.20/x
  3. Step 3: Cross multiply
    30,501.36x = 42,077.88 × 17,917.20
  4. Step 4: Simplify right side
    30,501.36x = 753,917,791.54
  5. Step 5: Solve for x
    x = 753,917,791.54/30,501.36
  6. Step 6: Final answer
    x = 24,717.51

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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.