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Finding the Fourth Proportional to 15,208.40, 22,812.60 and 8,647.40

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Solution

The fourth proportional to 15,208.40, 22,812.60 and 8,647.40 is: 12,971.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,208.40 : 22,812.60 = 8,647.40 : x
  2. Step 2: Convert to fraction form
    15,208.40/22,812.60 = 8,647.40/x
  3. Step 3: Cross multiply
    15,208.40x = 22,812.60 × 8,647.40
  4. Step 4: Simplify right side
    15,208.40x = 197,269,677.24
  5. Step 5: Solve for x
    x = 197,269,677.24/15,208.40
  6. Step 6: Final answer
    x = 12,971.10

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.