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Finding the Fourth Proportional to 17,812.40, 24,989.20 and 17,812.40

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Solution

The fourth proportional to 17,812.40, 24,989.20 and 17,812.40 is: 24,989.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    17,812.40 : 24,989.20 = 17,812.40 : x
  2. Step 2: Convert to fraction form
    17,812.40/24,989.20 = 17,812.40/x
  3. Step 3: Cross multiply
    17,812.40x = 24,989.20 × 17,812.40
  4. Step 4: Simplify right side
    17,812.40x = 445,117,626.08
  5. Step 5: Solve for x
    x = 445,117,626.08/17,812.40
  6. Step 6: Final answer
    x = 24,989.20

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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.