Home / 30,935.96-42,659.35-18,358.28

Finding the Fourth Proportional to 30,935.96, 42,659.35 and 18,358.28

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Solution

The fourth proportional to 30,935.96, 42,659.35 and 18,358.28 is: 25,315.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,935.96 : 42,659.35 = 18,358.28 : x
  2. Step 2: Convert to fraction form
    30,935.96/42,659.35 = 18,358.28/x
  3. Step 3: Cross multiply
    30,935.96x = 42,659.35 × 18,358.28
  4. Step 4: Simplify right side
    30,935.96x = 783,152,032.73
  5. Step 5: Solve for x
    x = 783,152,032.73/30,935.96
  6. Step 6: Final answer
    x = 25,315.27

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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.