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Finding the Fourth Proportional to 18,271.90, 25,632.50 and 18,271.90

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Solution

The fourth proportional to 18,271.90, 25,632.50 and 18,271.90 is: 25,632.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,271.90 : 25,632.50 = 18,271.90 : x
  2. Step 2: Convert to fraction form
    18,271.90/25,632.50 = 18,271.90/x
  3. Step 3: Cross multiply
    18,271.90x = 25,632.50 × 18,271.90
  4. Step 4: Simplify right side
    18,271.90x = 468,354,476.75
  5. Step 5: Solve for x
    x = 468,354,476.75/18,271.90
  6. Step 6: Final answer
    x = 25,632.50

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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.