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Finding the Fourth Proportional to 25,689, 35,453.70 and 14,511.72

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Solution

The fourth proportional to 25,689, 35,453.70 and 14,511.72 is: 20,027.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    25,689 : 35,453.70 = 14,511.72 : x
  2. Step 2: Convert to fraction form
    25,689/35,453.70 = 14,511.72/x
  3. Step 3: Cross multiply
    25,689x = 35,453.70 × 14,511.72
  4. Step 4: Simplify right side
    25,689x = 514,494,167.36
  5. Step 5: Solve for x
    x = 514,494,167.36/25,689
  6. Step 6: Final answer
    x = 20,027.80

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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.