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Finding the Fourth Proportional to 14,647.08, 20,214.40 and 8,360.40

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Solution

The fourth proportional to 14,647.08, 20,214.40 and 8,360.40 is: 11,538.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,647.08 : 20,214.40 = 8,360.40 : x
  2. Step 2: Convert to fraction form
    14,647.08/20,214.40 = 8,360.40/x
  3. Step 3: Cross multiply
    14,647.08x = 20,214.40 × 8,360.40
  4. Step 4: Simplify right side
    14,647.08x = 169,000,469.76
  5. Step 5: Solve for x
    x = 169,000,469.76/14,647.08
  6. Step 6: Final answer
    x = 11,538.17

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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.