Home / 11,501.72-15,867.04-6,721.86

Finding the Fourth Proportional to 11,501.72, 15,867.04 and 6,721.86

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Solution

The fourth proportional to 11,501.72, 15,867.04 and 6,721.86 is: 9,273.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,501.72 : 15,867.04 = 6,721.86 : x
  2. Step 2: Convert to fraction form
    11,501.72/15,867.04 = 6,721.86/x
  3. Step 3: Cross multiply
    11,501.72x = 15,867.04 × 6,721.86
  4. Step 4: Simplify right side
    11,501.72x = 106,656,021.49
  5. Step 5: Solve for x
    x = 106,656,021.49/11,501.72
  6. Step 6: Final answer
    x = 9,273.05

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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.