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Finding the Fourth Proportional to 53,258.99, 79,889.69 and 13,817.66

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Solution

The fourth proportional to 53,258.99, 79,889.69 and 13,817.66 is: 20,726.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    53,258.99 : 79,889.69 = 13,817.66 : x
  2. Step 2: Convert to fraction form
    53,258.99/79,889.69 = 13,817.66/x
  3. Step 3: Cross multiply
    53,258.99x = 79,889.69 × 13,817.66
  4. Step 4: Simplify right side
    53,258.99x = 1,103,888,209.02
  5. Step 5: Solve for x
    x = 1,103,888,209.02/53,258.99
  6. Step 6: Final answer
    x = 20,726.80

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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.