Home / 11,437.68-15,783.36-6,720.24

Finding the Fourth Proportional to 11,437.68, 15,783.36 and 6,720.24

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Solution

The fourth proportional to 11,437.68, 15,783.36 and 6,720.24 is: 9,273.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,437.68 : 15,783.36 = 6,720.24 : x
  2. Step 2: Convert to fraction form
    11,437.68/15,783.36 = 6,720.24/x
  3. Step 3: Cross multiply
    11,437.68x = 15,783.36 × 6,720.24
  4. Step 4: Simplify right side
    11,437.68x = 106,067,967.21
  5. Step 5: Solve for x
    x = 106,067,967.21/11,437.68
  6. Step 6: Final answer
    x = 9,273.56

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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.