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Finding the Fourth Proportional to 9,933.20, 14,878.20 and 8,637.20

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Solution

The fourth proportional to 9,933.20, 14,878.20 and 8,637.20 is: 12,937.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,933.20 : 14,878.20 = 8,637.20 : x
  2. Step 2: Convert to fraction form
    9,933.20/14,878.20 = 8,637.20/x
  3. Step 3: Cross multiply
    9,933.20x = 14,878.20 × 8,637.20
  4. Step 4: Simplify right side
    9,933.20x = 128,505,989.04
  5. Step 5: Solve for x
    x = 128,505,989.04/9,933.20
  6. Step 6: Final answer
    x = 12,937.02

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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.