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Finding the Fourth Proportional to 9,362.80, 14,029.80 and 8,124.40

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Solution

The fourth proportional to 9,362.80, 14,029.80 and 8,124.40 is: 12,174.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,362.80 : 14,029.80 = 8,124.40 : x
  2. Step 2: Convert to fraction form
    9,362.80/14,029.80 = 8,124.40/x
  3. Step 3: Cross multiply
    9,362.80x = 14,029.80 × 8,124.40
  4. Step 4: Simplify right side
    9,362.80x = 113,983,707.12
  5. Step 5: Solve for x
    x = 113,983,707.12/9,362.80
  6. Step 6: Final answer
    x = 12,174.10

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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.