Home / 11,579.48-15,979.58-6,543.78

Finding the Fourth Proportional to 11,579.48, 15,979.58 and 6,543.78

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Solution

The fourth proportional to 11,579.48, 15,979.58 and 6,543.78 is: 9,030.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,579.48 : 15,979.58 = 6,543.78 : x
  2. Step 2: Convert to fraction form
    11,579.48/15,979.58 = 6,543.78/x
  3. Step 3: Cross multiply
    11,579.48x = 15,979.58 × 6,543.78
  4. Step 4: Simplify right side
    11,579.48x = 104,566,856.01
  5. Step 5: Solve for x
    x = 104,566,856.01/11,579.48
  6. Step 6: Final answer
    x = 9,030.36

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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.