Home / 30,005.97-45,008.38-8,960.28

Finding the Fourth Proportional to 30,005.97, 45,008.38 and 8,960.28

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Solution

The fourth proportional to 30,005.97, 45,008.38 and 8,960.28 is: 13,440.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,005.97 : 45,008.38 = 8,960.28 : x
  2. Step 2: Convert to fraction form
    30,005.97/45,008.38 = 8,960.28/x
  3. Step 3: Cross multiply
    30,005.97x = 45,008.38 × 8,960.28
  4. Step 4: Simplify right side
    30,005.97x = 403,287,529.57
  5. Step 5: Solve for x
    x = 403,287,529.57/30,005.97
  6. Step 6: Final answer
    x = 13,440.24

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.