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Finding the Fourth Proportional to 18,453.70, 25,465.98 and 10,070.20

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Solution

The fourth proportional to 18,453.70, 25,465.98 and 10,070.20 is: 13,896.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,453.70 : 25,465.98 = 10,070.20 : x
  2. Step 2: Convert to fraction form
    18,453.70/25,465.98 = 10,070.20/x
  3. Step 3: Cross multiply
    18,453.70x = 25,465.98 × 10,070.20
  4. Step 4: Simplify right side
    18,453.70x = 256,447,511.80
  5. Step 5: Solve for x
    x = 256,447,511.80/18,453.70
  6. Step 6: Final answer
    x = 13,896.81

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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.