Home / 12,004.30-18,009.15-7,071.40

Finding the Fourth Proportional to 12,004.30, 18,009.15 and 7,071.40

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Solution

The fourth proportional to 12,004.30, 18,009.15 and 7,071.40 is: 10,608.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,004.30 : 18,009.15 = 7,071.40 : x
  2. Step 2: Convert to fraction form
    12,004.30/18,009.15 = 7,071.40/x
  3. Step 3: Cross multiply
    12,004.30x = 18,009.15 × 7,071.40
  4. Step 4: Simplify right side
    12,004.30x = 127,349,903.31
  5. Step 5: Solve for x
    x = 127,349,903.31/12,004.30
  6. Step 6: Final answer
    x = 10,608.69

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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.