Home / 11,214.04-15,480.12-7,985.92

Finding the Fourth Proportional to 11,214.04, 15,480.12 and 7,985.92

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Solution

The fourth proportional to 11,214.04, 15,480.12 and 7,985.92 is: 11,023.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,214.04 : 15,480.12 = 7,985.92 : x
  2. Step 2: Convert to fraction form
    11,214.04/15,480.12 = 7,985.92/x
  3. Step 3: Cross multiply
    11,214.04x = 15,480.12 × 7,985.92
  4. Step 4: Simplify right side
    11,214.04x = 123,622,999.91
  5. Step 5: Solve for x
    x = 123,622,999.91/11,214.04
  6. Step 6: Final answer
    x = 11,023.95

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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.