Home / 11,398.64-15,724.68-6,618.56

Finding the Fourth Proportional to 11,398.64, 15,724.68 and 6,618.56

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Solution

The fourth proportional to 11,398.64, 15,724.68 and 6,618.56 is: 9,130.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,398.64 : 15,724.68 = 6,618.56 : x
  2. Step 2: Convert to fraction form
    11,398.64/15,724.68 = 6,618.56/x
  3. Step 3: Cross multiply
    11,398.64x = 15,724.68 × 6,618.56
  4. Step 4: Simplify right side
    11,398.64x = 104,074,738.06
  5. Step 5: Solve for x
    x = 104,074,738.06/11,398.64
  6. Step 6: Final answer
    x = 9,130.45

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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.