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Finding the Fourth Proportional to 18,270.90, 25,631.10 and 18,270.90

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Solution

The fourth proportional to 18,270.90, 25,631.10 and 18,270.90 is: 25,631.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,270.90 : 25,631.10 = 18,270.90 : x
  2. Step 2: Convert to fraction form
    18,270.90/25,631.10 = 18,270.90/x
  3. Step 3: Cross multiply
    18,270.90x = 25,631.10 × 18,270.90
  4. Step 4: Simplify right side
    18,270.90x = 468,303,264.99
  5. Step 5: Solve for x
    x = 468,303,264.99/18,270.90
  6. Step 6: Final answer
    x = 25,631.10

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.40) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.