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Finding the Fourth Proportional to 53,289, 79,946.64 and 15,847.56

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Solution

The fourth proportional to 53,289, 79,946.64 and 15,847.56 is: 23,775.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    53,289 : 79,946.64 = 15,847.56 : x
  2. Step 2: Convert to fraction form
    53,289/79,946.64 = 15,847.56/x
  3. Step 3: Cross multiply
    53,289x = 79,946.64 × 15,847.56
  4. Step 4: Simplify right side
    53,289x = 1,266,959,174.20
  5. Step 5: Solve for x
    x = 1,266,959,174.20/53,289
  6. Step 6: Final answer
    x = 23,775.25

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.