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Finding the Fourth Proportional to 13,334.77, 20,009.14 and 8,653.68

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Solution

The fourth proportional to 13,334.77, 20,009.14 and 8,653.68 is: 12,985.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,334.77 : 20,009.14 = 8,653.68 : x
  2. Step 2: Convert to fraction form
    13,334.77/20,009.14 = 8,653.68/x
  3. Step 3: Cross multiply
    13,334.77x = 20,009.14 × 8,653.68
  4. Step 4: Simplify right side
    13,334.77x = 173,152,673.00
  5. Step 5: Solve for x
    x = 173,152,673.00/13,334.77
  6. Step 6: Final answer
    x = 12,985.05

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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.