Home / 30,786.90-42,485.07-17,358.04

Finding the Fourth Proportional to 30,786.90, 42,485.07 and 17,358.04

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Solution

The fourth proportional to 30,786.90, 42,485.07 and 17,358.04 is: 23,953.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,786.90 : 42,485.07 = 17,358.04 : x
  2. Step 2: Convert to fraction form
    30,786.90/42,485.07 = 17,358.04/x
  3. Step 3: Cross multiply
    30,786.90x = 42,485.07 × 17,358.04
  4. Step 4: Simplify right side
    30,786.90x = 737,457,332.04
  5. Step 5: Solve for x
    x = 737,457,332.04/30,786.90
  6. Step 6: Final answer
    x = 23,953.61

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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.