Home / 15,579.32-21,499.28-9,608.60

Finding the Fourth Proportional to 15,579.32, 21,499.28 and 9,608.60

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Solution

The fourth proportional to 15,579.32, 21,499.28 and 9,608.60 is: 13,259.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,579.32 : 21,499.28 = 9,608.60 : x
  2. Step 2: Convert to fraction form
    15,579.32/21,499.28 = 9,608.60/x
  3. Step 3: Cross multiply
    15,579.32x = 21,499.28 × 9,608.60
  4. Step 4: Simplify right side
    15,579.32x = 206,577,981.81
  5. Step 5: Solve for x
    x = 206,577,981.81/15,579.32
  6. Step 6: Final answer
    x = 13,259.76

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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.