Home / 14,177.28-19,564.64-7,889.60

Finding the Fourth Proportional to 14,177.28, 19,564.64 and 7,889.60

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Solution

The fourth proportional to 14,177.28, 19,564.64 and 7,889.60 is: 10,887.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,177.28 : 19,564.64 = 7,889.60 : x
  2. Step 2: Convert to fraction form
    14,177.28/19,564.64 = 7,889.60/x
  3. Step 3: Cross multiply
    14,177.28x = 19,564.64 × 7,889.60
  4. Step 4: Simplify right side
    14,177.28x = 154,357,183.74
  5. Step 5: Solve for x
    x = 154,357,183.74/14,177.28
  6. Step 6: Final answer
    x = 10,887.64

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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.